[PDF Notes] The term monetary standard refers to the type of standard money used in a monetary system

The term monetary standard refers to the type of standard money used in a monetary system. Standard money is that money in which the monetary authority may ultimately discharge its own obligations.

The monetary standard is thus synonymous with the standard money. If a country’s standard money or monetary unit is stabilised in terms of gold, it is said to be on a gold standard; if it is stablised in terms of silver.

It is said to be on a silver standard; if it is stabilised in gold and silver both, it is said to be on a bimetallic standard; and if it is not stabilised in terms of any metal, it is said to be on an inconvertible standard.

In short, monetary standard refers to the nature and conditions of the issue of the standard money of a monetary system. In the words of Cathcart, “A monetary standard is the standard that is chosen by a society for its ultimate standard of value and which also, usually, serves as an asset of value promised on demand by debt-money issuers.”

Some authors defined monetary standard in a broader sense to include within its scope not only the selection of a unit of account, but also the laws and practices affecting a country’s money.

According to Shapiro, “The monetary standard of a nation involves the overall sets of laws and practices which control the quality and quantity of money in the system.”

Similarly, in the words of Kent, “A monetary standard can be defined as a monetary system built upon a specific standard of value.” Such definitions create awkward situation because they imply that every change in the monetary system changes the monetary standard.

Monetary standard has two aspects: national and international. Basically, monetary standard is national in character because it is intended to meet the internal requirements of an economy, i.e., to serve as a medium of exchange and a measure of value.

But, the monetary standard also assumes international character since it has to facilitate international payments.

Thus, a sound monetary standard should fulfill two objectives: (a) to maintain stability in the currency’s internal value or the price level and (b) to maintain stability in the currency’s external value, i.e., its value in terms of foreign currencies.

300+ TOP Magnetism & Electromagnetism MCQs and Answers

MAGNETISM and ELECTROMAGNETISM Multiple Choice Questions

1. Tesla is a unit of
(a) field strength
(b) inductance
(c) flux density
(d) flux
Answer: c

2. A permeable substance is one
(a) which is a good conductor
(6) which is a bad conductor
(c) which is a strong magnet
(d) through which the magnetic lines of force can pass very easily
Answer: d

3. The materials having low retentivity are suitable for making
(a) weak magnets
(b) temporary magnets
(c) permanent magnets
(d) none of the above
Answer: b

4. A magnetic field exists around
(a) iron
(b) copper
(c) aluminium
(d) moving charges
Answer: d

5. Ferrites are materials.
(a) paramagnetic
(b) diamagnetic
(c) ferromagnetic
(d) none of the above
Answer: c

6. Air gap has_______eluctance as compared to iron or steel path
(a) little
(b) lower
(c) higher
(d) zero
Answer: b

7. The direction of magnetic lines of force is
(a) from south pole to north pole
(b) from north pole to south pole
(c) from one end of the magnet to another
(d) none of the above
Answer: b

8. Which of the following is a vector quantity ?
(a) Relative permeability
(b) Magnetic field intensity
(c) Flux density
(d) Magnetic potential
Answer: b

9. The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is
(a) proportional to 7
(b) proportional to X
(c) proportional to distance between the conductors
(d) inversely proportional to I
Answer: b

10. A material which is slightly repelled by a magnetic field is known as
(a) ferromagnetic material
(b) diamagnetic material
(c) paramagnetic material
(d) conducting material
Answer: b

11. When an iron piece is placed in a magnetic field
(a) the magnetic lines of force will bend away from their usual paths in order to go away from the piece
(b) the magnetic lines of force will bend away from their usual paths in order to pass through the piece
(c) the magnetic field will not be affected
(d) the iron piece will break
Answer: b

12. Fleming’s left hand rule is used to find
(a) direction of magnetic field due to current carrying conductor
(b) direction of flux in a solenoid
(c) direction of force on a current carrying conductor in a magnetic field
(d) polarity of a magnetic pole
Answer: c

13. The ratio of intensity of magnetisation to the magnetisation force is known as
(a) flux density
(b) susceptibility
(c) relative permeability
(d) none of the above
Answer: b

14. Magnetising steel is normals difficult because
(a) it corrodes easily
(6) it has high permeability
(c) it has high specific gravity
(d) it has low permeability
Answer: d

15. The left hand rule correlates to
(a) current, induced e.m.f. and direction of force on a conductor
(b) magnetic field, electric field and direction of force on a conductor
(c) self induction, mutual induction and direction of force on a conductor
(d) current, magnetic field and direction of force on a conductor
Answer: d

16. The unit of relative permeability is
(a) henry/metre
(b) henry
(c) henry/sq. m
(d) it is dimensionless
Answer: d

17. A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be
(a) zero
(b) BLI
(c) B2LI
(d) BLI2
Answer: a

18. The force between two long parallel conductors is inversely proportional to
(a) radius of conductors
(b) current in one conductor
(c) product of current in two conductors
(d) distance between the conductors
Answer: d

19. Materials subjected to rapid reversal of magnetism should have
(a) large area oiB-H loop
(b) high permeability and low hysteresis loss
(c) high co-ercivity and high retentivity
(d) high co-ercivity and low density
Answer: b

20. Indicate which of the following material does not retain magnetism permanently.
(a) Soft iron
(b) Stainless steel
(e) Hardened steel
(d) None of the above
Answer: a

21. The main constituent of permalloy is
(a) cobalt
(b) chromium
(c) nickel
(d) tungsten
Answer: c

22. The use of permanent magnets is. not made in
(a) magnetoes
(6) energy meters
(c) transformers
(d) loud-speakers
Answer: c

23. Paramagnetic materials have relative permeability
(a) slightly less than unity
(b) equal to unity
(c) slightly more than unity
(d) equal to that ferromagnetic mate rials
Answer: c

24. Degaussing is the process of
(a) removal of magnetic impurities
(b) removing gases from the materials
(c) remagnetising metallic parts
(d) demagnetising metallic parts
Answer:

25. Substances which have permeability less than the permeability of free space are known as
(a) ferromagnetic
(b) paramagnetic
(c) diamagnetic
(d) bipolar
Answer: c

26. Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of
(a) 2 x 1(T2 N/m)
(b) 2 x KT3 N/m
(c) 2 x 10″5 N/m
(d) 2x 1(T7 N/m)
Answer: d

27. In the left hand rule, forefinger always represents
(a) voltage
(b) current
(c) magnetic field
(d) direction of force on the conductor
Answer: c

28. Which of the following is a ferromagnetic material ?
(a) Tungsten
(b) Aluminium
(c) Copper
(d) Nickel
Answer: d

29. Ferrites are a sub-group of
(a) non-magnetic materials
(6) ferro-magnetic materials
(c) paramagnetic materials
(d) ferri-magnetic materials
Answer: d

30. Gilbert is a unit of
(a) electromotive force
(6) magnetomotive force
(c) conductance
(d) permittivity
Answer: b

31. The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields
(a) meter is surrounded by strong magnetic fields
(b) a soft iron shielding is used
(c) a plastic shielding is provided
(d) a shielding of anon-magnetic material is used
Answer: b

32. Reciprocal of permeability is
(a) reluctivity
(b) susceptibility
(c) permittivity
(d) conductance
Answer: a

33. The relative permeability is less than unity is case of
(a) ferromagnetic materials
(b) ferrites
(c) non-ferrous materials
(d) diamagnetic materials
Answer: d

34. Which of the following is the unit of magnetic flux density ?
(a) weber
(b) lumens
(c) tesla
(d) none of the above
Answer: c

35. The magnetism left in the iron after exciting field has been removed is known as
(a) permeance
(b) residual magnetism
(c) susceptance
(d) reluctance
Answer: b

36. Which of the following is not a unit of flux?
(a) Maxwell
(b) Telsa
(c) Weber
(d) All of the above
Answer: b

37. Which of the following is expected to have the maximum permeability ?
(a) Brass
(b) Copper
(c) Zinc
(d) Ebonite
Answer: d

38. One telsa is equal to
(a) 1 Wb/mm2
(b) 1 Wb/m
(c) 1 Wb/m2
(d) 1 mWb/m2
Answer: c

39. Out of the following statements, concerning an electric field, which statement is not true ?
(a) The electric intensity is a vector quantity
(b) The electric field intensity at a point is numerically equal to the force exerted upon a charge placed at that point
(c) An electric field is defined as a point in space at which an electric charge would experience a force
(d) Unit field intensity in the exertion of a force of one newton on a charge of one coulomb
Answer: b

40. When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon
(a) resistance of the coil
(b) motion of the magnet
(c) number of turns of the coil
(d) pole strength of the magnet
Answer: a

41. One maxwell is equal to
(a) 10 webers
(b) 10 webers
(c) 10 webers
(d) 10 webers
Answer: d

42. When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle
(a) will be zero
(b) will be infinite
(c) will depend on the amount of e.m.f. applied
(d) will depend on the radius of the circle
Answer: d

43. Susceptibility is positive for
(a) non-magnetic substances
(b) diamagnetic substances
(c) ferromagnetic substances
(d) none of the above
Answer: c

44. Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be
(a) 100 N
(b) 10 N
(c) 1 N
(d) 0.1 N
Answer: d

45. A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be
(a) 240 N
(6) 24 N
(c) 2.4 N
(d) 0.24 N
Answer: c

46. A 200 turn coil having an axial length of 30 mm and a radius of 10 mm is pivoted in a magnetic field having a flux density of 0.8 T. If the coil carries a current of 0.5 A, the torque acting on the coil will be
(a) 8 N-m
(b) 0.48 N-m
(e) 0.048 N-m
(d) 0.0048 N-m
[Hint. Torque = 2BIlNr N-m]
Answer: c

47. The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength ?
(a) 2500 AT/m
(b) 250 AT/m
(c) 25 AT/m
(d) 2.5 AT/m
Answer: b

48. What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?
(a) 22 x 10″8 N
(b) 22 x 10″7 N
(c) 22 x 10-6 N
(d) 22 x 10″5 N
Answer: d

49. A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?
(a) 63.38 N/Wb
(b) 633.8 N/Wb
(c) 6338 N/Wb
(d) 63380 N/Wb
Answer: c

50. The unit of flux is the same as that of
(a) reluctance
(b) resistance
(c) permeance
(d) pole strength
Answer: d

51. Unit for quantity of electricity is
(a) ampere-hour
(b) watt
(c) joule
(d) coulomb
Answer: d

52. The Biot-savart’s law is a general modification of
(a) Kirchhoffs law
(b) Lenz’s law
(c) Ampere’s law
(d) Faraday’s laws
Answer: c

53. The most effective and quickest may of making a magnet from soft iron is by
(a) placing it inside a coil carrying current
(b) induction
(c) the use of permanent magnet
(d) rubbing with another magnet
Answer: a

54. The commonly used material for shielding or screening magnetism is
(a) copper
(b) aluminium
(c) soft iron
(d) brass
Answer: c

55. If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity
(a) less than that of disc but in opposite direction
(b) equal to that of disc and in the same direction
(c) equal to that of disc and in the opposite direction
(d) less than that of disc and in the same direction
Answer: d

56. A permanent magnet
(a) attracts some substances and repels others
(b) attracts all paramagnetic substances and repels others
(c) attracts only ferromagnetic substances
(d) attracts ferromagnetic substances and repels all others
Answer: a

57. The retentivity (a property) of material is useful for the construction of
(a) permanent magnets
(b) transformers
(c) non-magnetic substances
(d) electromagnets
Answer: a

58. The relative permeability of materials is not constant.
(a) diamagnetic
(b) paramagnetic
(c) ferromagnetic
(d) insulating
Answer: c

59. The materials are a bit inferior conductors of magnetic flux than air.
(a) ferromagnetic
(b) paramagnetic
(c) diamagnetic
(d) dielectric
Answer: c

60. Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials.
(a) circular
(b) triangular
(c) rectangular
(d) none of the above
Answer: c

61. A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be
(a) M
(6) M/2
(c) 2 M
(d) M/4
Answer: b

62. A keeper is used to
(a) change the direction of magnetic lines
(b) amplify flux
(c) restore lost flux
(d) provide a closed path for flux
Answer: d

63. Magnetic moment is a
(a) pole strength
(6) universal constant
(c) scalar quantity
(d) vector quantity
Answer: d

64. The change of cross-sectional area of conductor in magnetic field will affect
(a) reluctance of conductor
(b) resistance of conductor
(c) (a) and (b) both in the same way
(d) none of the above
Answer: c

65. The uniform magnetic field is
(a) the field of a set of parallel conductors
(b) the field of a single conductor
(c) the field in which all lines of magnetic flux are parallel and equidistant
(d) none of the above
Answer: c

66. The magneto-motive force is
(a) the voltage across the two ends of exciting coil
(b) the flow of an electric current
(c) the sum of all currents embraced by one line of magnetic field
(d) the passage of magnetic field through an exciting coil
Answer: c

67. What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200 ?
(a) 2
(b) 4
(c) 6
(d) 8
Answer: b

68. What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m ?
(a) 2 AT
(b) 4 AT
(c) 6 AT
(d) 10 AT
Answer: b

69. Which of the following statements is correct ?
(a) The magnetic flux inside an exciting coil is lower than its outside surface
(6) The magnetic flux inside an exciting coil is zero
(e) The magnetic flux inside the exciting coil is greater than its outside surface
(d) The magnetic flux inside the exciting coil is same as on its outside surface
Answer: d

70. A certain amount of current flows through a ring-shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil ?
(a) Decreases
(b) Increases
(c) Remains same
(d) First increases and then decreases depending on the depth of iron in¬sertion
Answer: b

71. The magnetic reluctance of a material
(a) decreases with increasing cross sectional area of material
(6) increases with increasing cross-sec-tional area of material
(c) does not vary with increasing cross-sectional area of material
(d) any of the above
Answer: a

72. The initial permeability of an iron rod is
(a) the highest permeability of the iron rod
(b) the lowest permeability of the iron rod
(c) the permeability at the end of the iron rod
(d) the permeability almost in non-magnetised state
Answer: d

73. How does the magnetic compass needle behave in a magnetic field ?
(a) It assures a position right angle to magnetic field
(b) It starts rotating
(c) It assures a position which follows a line of magnetic flux
(d) None of the above
Answer: c

74. In a simple magnetic field the strength of magnet flux
(a) is constant and has same value in energy part of the magnetic field
(6) increases continuously from initial value to final value
(c) decreases continuously from initial value to final value
(d) first increases and then decreases till it becomes zero
Answer: d

75. The stray line of magnetic flux is defined as
(a) a line vertical to the flux lines
(b) the mean length of a ring shaped coil
(c) a line of magnetic flux in a non-uniform field
(d) a line of magnetic flux which does not follow the designed path
Answer: d

76. The bar magnet has
(a) the dipole moment
(b) monopole moment
(c) (a) and (b) both
(d) none of the above
Answer: a

77. Which of the following materials are diamagnetic ?
(a) Silver
(b) Copper
(c) Silver and copper
(d) Iron
Answer: c

78. Which of the following type of materials are not very important for engineering applications ?
(a) Ferromagnetic
(b) Paramagnetic
(c) Diamagnetic
(d) None of the above
Answer: c

79. The susceptibility of paramagnetic materials generally lies between
(a) KT3 and 1CT6
(b) 1CT3 and 1CT7
(c) KT4 and KT8
(d) 10″2 and KT5
Answer: a

91. For which of the following materials the saturation value is the highest ?
(a) Ferromagnetic materials
(6) Paramagnetic materials
(c) Diamagnetic materials
(d) Ferrites
Answer: d

92. The magnetic materials exhibit the property of magnetisation because of
(a) orbital motion of electrons
(b) spin of electrons
(c) spin of nucleus
(d) either of these
(e) all of the above
Answer: c

93. For which of the following materials the net magnetic moment should be zero ?
(a) Diamagnetic materials
(b) Ferrimagnetic materials
(c) Antiferromagnetic materials
(d) Antiferrimagnetic materials
Answer: c

94. The attraction capacity of electromagnet will increase if the
(a) core length increases i
(b) core area increases
(c) flux density decreases
(d) flux density increases
Answer: d

95. Which of the following statements is correct ?
(a) The conductivity of ferrites is better than ferromagnetic materials
(b) The conductivity of ferromagnetic materials is better than ferrites
(c) The conductivity of ferrites is very high
(d) The conductivity of ferrites is same as that of ferromagnetic materials
Answer: a

96. Temporary magnets are used in
(a) loud-speakers
(b) generators
(c) motors
(d) all of the above
Answer: d

97. Main causes of noisy solenoid are
(a) strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force
(b) uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts
(c) both of above
(d) none of the above
Answer: c

98. Strength of an electromagnet can be increased by
(a) increasing the cross-sectional area
(b) increasing the number of turns
(c) increasing current supply
(d) all above methods
Answer:

99. Core of an electromagnet should have
(a) low coercivity
(6) high susceptibility
(c) both of the above
(d) none of the above
Answer: c

100. Magnetism of a magnet can be destroyed by
(a) heating
(b) hammering
(c) by inductive action of another magnet
(d) by all above methods
Answer: d

MAGNETISM and ELECTROMAGNETISM Multiple Choice Questions and Answers ::

[PDF Notes] What are the Merits of the Gresham’s Law?

Gresham’s law will operate if the following necessary conditions are satisified. In the absence of these conditions the law will fail to apply.

1. Usefulness of Good Money:

An important condition for Gresham’s law is that the intrinsically more valuable money (i. e., good money) must also be more valuable in other uses than it is as money in circulation.

The failure of this condition to apply explains why the coin currency today remains in circulation as fairly as paper currency despite its higher intrinsic value.

2. Fixed Parity Ratio:

The applicability of the law requires that the intrinsically more valuable money must be relatively fixed by law in its parity with money. The law will not hold where one money becomes intrinsically more valuable than another money (at the old parity) if the parity changes.

3. Sufficient Money Supply:

The law will operate only if both good money and bad money are in circulation and the total money supply is more than the actual monetary requirements of the economy.

4. Sufficient Supply of Bad Money:

The applicability of the law requires that there should be sufficient bad money in circulation to meet the transactions requirement of the people. If there is scarcity of bad money, both good and bad money will remain in circulation and the law will not operate.

5. Contents of Pure Metal:

The law will not operate if the contents of pure metal in coins are less than that in the old ones.

6. Acceptability of Bad Money:

The law will operate if people are prepared to accept bad money in transactions.

7. Distinction between Good Money and Bad Money:

The law assumes that people can distinguish between bad money and good money.

8. Development of Banking Habit:

The law applies in the absence of banking habits. Development of banking habits among the people tends to discourage hoarding and thus restricts the operation of Gresham’s law.

9. Convertibility:

The law also does not operate if the country is on inconvertible paper standard.

300+ TOP Electrostatic MCQs and Answers Pdf Quiz

ELECTROSTATIC Multiple Choice Questions with Answers

1. The force between two charges is 120 N. If the distance between the charges is doubled, the force will be
A. 60 N
B. 30 N
C. 40 N
D. 15 N

Answer: B

2. The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be
A. 400 N/C
B. 600 N/C
C. 800 N/C
D. 1200 N/C

Answer: C

3. The lines of force due to charged particles are
A. always straight
B. always curved
C. sometimes curved
D. none of the above

Answer: B

4. The electric field at a point situated at a distance d from straight charged conductor is
A. proportional to d
B. inversely proportional to d
C. inversely proportional to d
D. none of the above

Answer: B

5. The direction of electric field due +0 positive charge is .
A. away from the charge
B. towards the charge
C. both A. and B.
D. none of the above

Answer: A

6. A field line and an equipotential surface are
A. always parallel
B. always at 90°
C. inclined at any angle 0
D. none of the above

Answer: B

7. The ability of charged bodies to exert force on 6ne another is attributed to the existence of
A. electrons
B. protons
C. neutrons
D. electric field

Answer: D

8. If the sheet of a bakelite is inserted between the plates of an air capacitor, the capacitance will
A. decrease
B. increase
C. remains unchanged
D. become zero

Answer: B

9. A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is
A. 0.024 F
B. 0.12 F
C. 0.6 F
D. 0.8 F

Answer: A

10. For making a capacitor, it is better to select a dielectric having
A. low permittivity
B. high permittivity
C. permittivity same as that of air
D. permittivity slightly more than that of air

Answer: BElectrostatic MCQs11. The units of capacitance are
A. volts/coulomb
B. coulombs/volt
C. ohms
D. henry/Wb

Answer: B

12. If three 15 uF capacitors are connected in series, the net capacitance is
A. 5 uF
B. 30 uF
C. 45 uF
D. 50 uF

Answer: A

13. If three 10 uF capacitors are connected in parallel, the net cararitance is
A. 20 uF
B. 30 uE
C. 40 uF
D. 50 uF

Answer: B

14. A dielectric material must be
A. resistor
B. insulator
C. good conductor
D. semi conductor

Answer: B

15. An electrolytic capacitor can be used for
A. D.C. only
B. AC. only
C. both D.C. as well as A.C.

Answer: A

16. The capacitance of a capacitor is not affected by
A. distance between plates
B. area of plates
C. thickness of plates
D. all of the above

Answer: C

17. Which of the following is not a vector ?
A. Linear momentum
B. Angular momentum
C. Electric field
D. Electric potential

Answer: B

18. Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the
A. Voltage across the plates increases
B. voltage across the plates decreases
C. charge on the capacitor decreases
D. charge on the capacitor increases

Answer: B

19. If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because
A. varying voltage produces the charging and dicharging currents
B. of high peak value
C. charging current can flow
D. discharge current can flow

Answer: A

20. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?
A. 50
B. 100
C. 150
D. 200

Answer: B

21. Which of the following statements is correct ?
A. Air capacitors have a black band to indicate the outside foil
B. Electrolytic capacitor must be connected in the correct polarity
C. Ceramic capacitors must be connected in the correct polarity
D. Mica capacitors are available in capacitance value of 1 to 10 pF

Answer: B

22. The dissipation factor of a good dielectric is of the order of
A. 0.0002
B. 0.002
C. 0.02
D. 0.2

Answer: A

23. “The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed”.
The above statement is associated with
A. Coulomb’s square law
B. Gauss’s law
C. Maxwell’s first law
D. Maxwell’s second law

Answer: B

24. Three capacitors each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them
A. all in series
B. all in parallel
C. two in parallel and third in series with this combination
D. two in series and third in parallel across this combination

Answer: C

25. For which of the following parameter variation, the capacitance of the capacitor remains unaffected ?
A. Distance between plates
B. Area of the plates
C. Nature of dielectric
D. Thickness of the plates

Answer: D

26. Which of the following statement is true ?
A. The current in the discharging capacitor grows linearly
B. The current in the dicharging capacitor grows exponentially
C. The current in the discharging capacitor decays exponentially
D. The current in the discharging capacitor decreases constantly

Answer: C

27. Which of the following expression is correct for electric field strength ?
A. E = D/E
B. E = D2/t
C. E = jtD
D. E= nD2

Answer: A

28. In a capacitor the electric charge is stored in
A. metal plates
B. dielectric
C. both A. and B.
D. none of the above

Answer: B

29. Which of the following materials has the highest value of dielectric constant?
A. Glass
B. Vacuum
C. Ceramics
D. Oil

Answer: C

30. Which of the following capacitors will have the least variation ?
A. Paper capacitor
B. Ceramic capacitor
C. Silver plated mica capacitor
D. None of the above

Answer: C

31. Which of the following statements is incorrect ?
A. The leakage resistance of ceramic capacitors is generally high
B. The stored energy in a capacitor decreases with reduction in value of capacitance
C. The stored energy in a capacitor increases with applied voltage
D. A wire cable has distributed capacitance between the conductors

Answer: B

32. Which of the following capacitors has relatively shorter shelf life ?
A. Mica capacitor
B. Electrolytic capacitor
C. Ceramic capacitor
D. Paper capacitor

Answer: B

33. The sparking between two electrical contacts can be reduced by inserting a
A. capacitor in parallel with contacts
B. capacitor in series with each contact
C. resistance in line
D. none of the above

Answer: A

34. In the case of a lossy capacitor, its series equivalent resistance value will be
A. small
B. very small
C. large
D. zero

Answer: C

35. The power dissipated in a pure capacitor is
A. zero
B. proportional to applied voltage
C. proportional to value of capacitance
D. both B. and C. above

Answer: A

36. In a capacitive circuit
A. a steady value of applied voltage causes discharge
B. an increase in applied voltage makes a capacitor charge
C. decrease in applied voltage makes a capacitor charge
D. none of the above

Answer: B

37. When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will
A. remain uncharged
B. decrease
C. increase
D. become zero

Answer: B

38. Capacitance increases with
A. increase in plate area and decrease in distance between the plates
B. increase in plate area and distance between the plates
C. decrease in plate area and value of applied voltage
D. reduction in plate area and distance between the plates

Answer: A

39. A capacitor consists of
A. two insulators separated by a conductor
B. two conductors separated by an insulator
C. two insulators only
D. two conductors only

Answer: B

40. A gang condenser is a
A. polarised capacitor
B. variable capacitor
C. ceramic capacitor
D. none of the above

Answer: B

41. A paper capacitor is usually available in the form of
A. tubes
B. rolled foil
C. disc
D. meshed plates

Answer: B

42. Air capacitors are generally available in the range
A. 10 to 400 pF
B. 1 to 20 pF
C. 100 to 900 pF
D. 20 to 100 pF

Answer: A

43. The unit of capacitance is
A. henry
B. ohm
C. farad
D. farad/m

Answer: C

44. A capacitor charged to 200 V has 2000 (iC of charge. The value of capacitance will be
A. 10 F
B. 10 uF
C. 100 nF
D. 1000 uF

Answer: B

45. A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?
A. Paper capacitor
B. Ceramic capacitor
C. Electrolytic capacitor
D. Any-of the above

Answer: C

46. Energy stored in the electric field of a capacitor C when charged from a D.C source of voltage V is equal to joules
A. CV2
B. C2V
C. CV2
D. CV

Answer: A

47. The absolute permittivity of free space is given by
A. 8.854 x 1(T9 F/m)
B. 8.854 x 1(T10 F/m)
C. 8.854 x KT11 F/m
D. 8.854 x 10″12 F/m

Answer: B

48. The relative permittivity of free space is given by
A. 1
B. 10
C. 100
D. 1000

Answer: A

49. Electric field intensity is a quantity
A. scalar
B. vector
C. both A. and B.
D. none of the above

Answer: B

50. When 4 volts e.m.f. is applied across a 1 farad capacitor, it will store energy of
A. 2 joules
B. 4 joules
C. 6 joules
D. 8 joules

Answer: D

51. The capacitor preferred for high frequency circuits is
A. air capacitor
B. mica capacitor
C. electrolytic capacitor
D. none of the above

Answer: B

52. The capacity of capacitor bank used in power factor correction is expressed in terms of
A. kW
B. kVA
C. kVAR
D. volts

Answer: C

53. While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is
A. short-circuited
B. open circuited
C. alright
D. leaky

Answer: D

54. If a 6 uF capacitor is charged to 200 V, the charge in coulombs will be
A. 800 uC
B. 900 uC
C. 1200 uC
D. 1600 uC

Answer: C

55. Which capacitor will be physically smaller for the same ratings ?
A. Ceramic capacitor
B. Paper capacitor
C. Both will be of equal size
D. None of the above

Answer: A

56. What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?
A. 50 pF
B. 100 pF
C. 150 pF
D. 200 pF

Answer: B

57. A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?
A. Ceramic capacitor
B. Mica capacitor
C. Both will have identical value of capacitance
D. It depends on applied voltage

Answer: A

58. Which of the following material has least value of dielectric constant ?
A. Ceramics
B. Oil
C. Glass
D. Paper

Answer: B

59. Which of the following capacitors will have the least value of breakdown voltage ?
A. Mica
B. Paper
C. Ceramic
D. Electrolytic

Answer: D

60. The breakdown voltage for paper capacitors is usually
A. 20 to 60 volts
B. 200 to 1600 volts
C. 2000 to 3000 volts
D. more than 10000 volts
Ans:

61. Dielectric constant for mica is nearly
A. 200
B. 100
C. 3 to 8
D. 1 to 2

Answer: C

62. The value of dielectric constant for vacuum is taken as
A. zero
B. 1
C. 4
D. 10

Answer: B

63. Which of the following capacitors is marked for polarity ?
A. Air
B. Paper
C. Mica
D. Electrolytic

Answer: D

64. Which of the following capacitors can be used for temperature compensation ?
A. Air capacitor
B. Ceramic capacitor
C. Paper capacitor
D. None of the above

Answer: B

65. Which of the following statements is incorrect ?
A. The thinner the dielectric, the more the capacitance and the lower the voltage breakdown rating for a capacitor .
B. A six dot mica capacitor colour coded white, green, black, red and yellow has the capacitance value of 500 pF
C. Capacitors in series provide less capacitance but a higher voltage breakdown rating for the combination
D. A capacitor can store charge because it has a dielectric between two conductors

Answer: B

66. Paper capacitors usually have a tolerance of
A. ± 5%
B. ± 10%
C. ± 15%
D. ± 20%

Answer: B

67. For closer tolerances which of the following capacitors is usually preferred ?
A. Paper capacitor
B. Mica capacitor
C. Ceramic disc capacitor
D. None of the above

Answer: B

68. The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be
A. 36 x 10fa
B. 36 x 107 N
C. 36 x 108 N
D. 36 x 109 N

Answer: D

69. The units of volume charge density are
A. Coulomb/meter
B. Coulomb/meter
C. Coulomb/meter
D. Coulomb/meter

Answer: C

70. “The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”.
The above statement is associated with
A. Gauss’s law
B. Kirchhoff s law
C. Faraday’s law
D. Lenz’s law

Answer: A

71. Dielectric strength of mica is
A. 10 to 20 kV/mm
B. 30 to 50 kV/mm
C. 50 to 200 kV/mm
D. 300 to 500 kV/mm

Answer: C

72. The dielectric constant (relative permittivity) of glass is given by
A. 0.1 to 0.4
B. 0.5 to 1.0
C. 2.0 to 4.0
D. 5 to 100

Answer: D

73. capacitors are mainly used for radio frequency tuning.
A. Paper
B. Air
C. Mica
D. Electrolytic

Answer: B

74. capacitors can be used only for D.C.
A. Air
B. Paper
(e) Mica
D. Electrolytic

Answer: D

75. capacitors are used in transistor circuits.
A. Ceramic
B. Paper
C. Air
D. Electrolytic

Answer: A

76. capacitors are used for audio frequency and radio frequency coupling and tuning.
A. Air
B. Mica
C. Plastic film
D. Ceramic

Answer: B

77. The inverse of capacitance is called
A. reluctance
B. conductance
C. susceptance
D. elastance

Answer: D

78. When the dielectric is homogeneous,the potential gradient is
A. uniform
B. non-uniform
C. zero
D. any of the above

Answer: A

79. The potential gradient across the material of low permittivity is than across the material of high permittivity.
A. smaller
B. greater
C. both A. and B.
D. none of the above

Answer: B

80. ________field is associated with the capacitor.
A. Electric
B. Magnetic
C. Both A. and B.
D. None of the above

Answer: A

81. A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is
A. 50 joules
B. 150 joules
C. 200 joules
D. 250 joules

Answer: D

82. A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is
A. 62 x 105 V/m
B. 72 x 105 V/m
C. 82 x 105 V/m
D. 92 x 105 V/m

Answer: B

83. Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is
A. 0.56 x 1015 m/s2
B. 1.5 x 1015 m/s2
C. 1.6 x 1015 m/s2
D. 1.76 x 1015 m/s2

Answer: D

84. The total deficiency or excess of electrons in a body is known as
A. current
B. voltage
C. potential gradient
D. charge

Answer: D

85. The relative permittivity has the following units
A. F/m
B. m/F
C. Wb/m
D. no units

Answer: D

86. The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as
A. pholoelectric effect
B. chemical effect
C. magnetic effect
D. induction

Answer: D

87. A unit tube of flux is known as tube
A. Newton
B. Faraday
C. Michale
D. None of the above

Answer: B

88. The number of Faraday tubes of flux passing through a surface in an electric field is called
A. electric flux
B. electric flux density
C. magnetic flux density
D. electric charge density

Answer: A

89. The unit of electric instensity is
A. N/C2
B. Wb/m2
C. N/C
D. N2/C
Ans:

90. The value of E within the field due to a point charge can be found with the help of
A. Faraday’s laws
B. Kirchhoff s laws
C. Coulomb’s laws
D. none of the above

Answer: C

91. at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.
A. Electric intensity
B. Magnetic flux density
C. Electric flux
D. None of the above

Answer: A

92. Electric intensity at any point in an electric field is equal to the at that point.
A. electric flux
B. magnetic flux density
C. potential gradient
D. none of the above

Answer: C

93. Electric displacement is a______quantity.
A. scalar
B. vector
C. both of the above
D. none of the above

Answer: B

94. at a point is equal to the negative potential gradient at that point.
A. Electric intensity
B. Electric flux
C. Magnetic flux
D. Magnetic flux density

Answer: A

95. The unit of dielectric strength is given by
A. V/m
B. V2/m
C. m/V
D. m/V2

Answer: A

96. Dielectric strength ______ with increasing thickness
A. increases
B. decreases
C. remains unaltered
D. none of the above

Answer: B

97. The property of a capacitor to store electricity is called its
A. capacitance
B. charge
C. energy
D. none of the above

Answer: A

98. is that property of a capacitor which delays any change of voltage across it.
A. Inductance
B. Capacitance
C. Potential gradient
D. None of the above

Answer: B

99. A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is
A. 0.2 s
B. 0.4 s
C. 0.6 s
D. 0.8 s

Answer: D

100. In a cable capacitor, voltage gradient is maximum at the surface of the
A. earth
B. conduction
C. sheath
D. insulator

Answer: B

101. The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value.
A. 37, initial
B. 62, initial
C. 62, final
D. 37, final

Answer: C

102 The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value,
A. 37
B. 42
C. 63
D. 73

Answer: A

103. The capacitance of a capacitor is influenced by
A. plate area
B. plate separation
C. nature of dielectric
D. none of the above
E. all of the above

Answer: E

104. A capacitor consists of two
A. ceramic plates and one mica disc
B. insulators separated by a dielectric
C. silver-coated insulators
D. conductors separated by an insulator

Answer: D

105. Permittivity is expressed in
A. Farad/sq-m
B. Farad/meter
C. Weber/meter
D. Weber/sq-m

Answer: B

106. Dielectric strength of a material depends on
A. moisture content
B. temperature
C. thickness
D. all of the above
E. none of the above

Answer: D

107. What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ?
A. It will become magnetic
B. It will melt
C. It will get punctured or cracked
D. Its molecular structure will get changed

Answer: C

108. Which medium has the least dielectric strength ?
A. Paraffin wax
B. Quartz
C. Glass
D. Air

Answer: D

109. 1 volt/meter is same as
A. 1 meter/coulomb
B. 1 newton meter
C. 1 newton/meter
D. 1 joule/coulomb

Answer: C

110. One volt is the same as
A. one joule/coulomb
B. one coulomb/joule
C. one coulomb
D. one joule

Answer: A

111. The capacitance between two plates increases with
A. shorter plate area and higher applied voltage
B. shorter plate area and shorter distance between them
C. larger plate area, longer distance between plates and higher,applied voltage
D. larger plate area and shorter distance between plates

Answer: D

112. The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by
A. CIR
B. 1/RC
C. RC
D. RIC

Answer: C

113. The bridge used for the measurement of the value of the capacitance is
A. Wien’s bridge
B. Wheatstone bridge
C. Schering bridge
D. Hay’s bridge

Answer: C

114. If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is
A. charged
B. short-circuited
C. lossy
D. satisfactory

Answer: B

115. Out of the following capacitors of identical rating which one will have the smallest dimensions ?
A. Aluminium foil capacitor
B. Mica capacitor
C. Ceramic capacitor
D. Paper capacitor

Answer: C

116. An uncharged conductor is placed near a charged conductor, then
A. the uncharged conductor gets charged by conduction
B. the uncharged conductor gets charged by induction and then attracted towards the charging body
C. the uncharged conductor is attracted first and then charged by induction
D. it remains as such

Answer: B

117. The presence of an uncharged conductor near a charged one increases the
A. charge of the charged conductor
B. capacity of the charged conductor
C. potential of the charged conductor
D. all of the above

Answer: B

118. Paper condenser is
A. always polarised
B. usually of fixed value
C. electrolytic condenser
D. a variable condenser

Answer: B

119. Mica capacitors are characterised by all of the following except
A. stable operation
B. accurate value
C. low leakage reactance
D. low losses

Answer: C

120. A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is
A. 100 kV/m
B. 10 kV/m
C. 5 kV/m
D. 2 kV/m

Answer: A

121. For a good 0.05 uF capacitor ohmmeter reading should
A. show low resistance momentarily and back off to a very high resistance
B. show high resistance momentarily and then a very low resistance
C. go quickly to 50 ohm approximately and remain there
D. not move at all

Answer: A

122. The ohmmeter reading for a short circuited capacitor is
A. infinity
B. few kilo ohms
C.few megohms
D. zero

Answer: D

123. Which of the following statements is correct ?
A. Mica capacitors are available in capacitance values of 5 to 20 uF
B. Air capapitors have a black band to indicate the outside foil
C. Electrolytic capacitors must be connected in correct polarity
D. Ceramic capacitors must be connected in correct polarity

Answer: C

124. Which of the following capacitors preferred for high frequency circuits ?
A. Air capacitor
B. Electrolytic capacitor
C. Mica capacitor
D. none of the above

Answer: C

125. An electrolytic capacitor is generally made to provide
A. low capacitance
B. fixed capacitance
C. variable capacitance
D. large value of capacitance

Answer: D

126. In order to remove static electricity from machinery
A. construct insulated cabins
B. insulate the machinery
C. ground the framework
D. humidify the surroundings

Answer: C

127. If a third equal and similar charge is placed between two equal and similar charges, then this third charge will
A. move out of the field of influence of the two charges
B. remain in stable equilibrium
C. not be in equilibrium
D. be in unstable equilibrium

Answer: B

128. A region around a stationary electric charge has
A. an electric field
B. a magnetic field
C. both A. and B.
D. none of the above

Answer: A

129. The minimum value of potential gradient in a cable occurs in
A. insulation
B. conductor
C. outer sheath
D. uniformly all over

Answer: A

130. Dielectric strength of medium
A. increases with rise in temperature
B. increases with moisture content
C. is same for all insulating materials
D. none of the above

Answer: D

131. Acharge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 10 N, is known as
A. milli-coulomb
B. micro-coulomb
C. pico-coulomb
D. coulomb

Answer: B

132. Dielectric strength of a medium is usually expressed in
A. J/mm
B. C/m2
C. kV/mm
D. N/mm

Answer: C

133. A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be
A. 5 times smaller than before
B. 5 times greater than before
C. 10 times greater than before
D. 25 times larger than before

Answer: D

134. Which is the most superior dielectric out of the following ?
A. Air
B. Glass
C. Bakelite
D. Paper

Answer: C

135. When a dielectric is placed in an electric field the field strength
A. decreases
B. increases
C. reduces to zero
D. remain unchanged

Answer: A

136. To prevent the generation of static charges on rubber or flat leather
A. surface is moistened
B. conductive dressing is done
C. oil compound dressing is done
D. talcum powder is sprayed on the surface

Answer: B

137. Which of the following capacitor is preferred in case of single phase motor ?
A. Mica capacitor
B. Paper capacitor
C. Electrolytic capacitor
D. Ceramic capacitor

Answer: C

138. A capacitance is a circuit component that opposes the change in circuit
A. current
B. voltage
C. impedance
D. none of the above

Answer: A

139. A condenser suitable for D.C. only is
A. metallic plate variable gang condenser
B. metallic paper capacitor
C. oil impregrated paper condenser
D. poled aluminium electrolytic condenser

Answer: D

140. In a capacitor, the electric charge is stored in
A. metal plates
B. dielectric
C. dielectric as well as metal plates
D. none of the above

Answer: B

ELECTROSTATIC Objective Questions pdf free download Online Test

[PDF Notes] What are the two important Functions of Gold Standard?

The Gold standard performs two important functions:

1. To Regulate the Volume of Currency:

Internally, gold standard forms the basis of the currency and acts as a regulator of the volume of currency in the country. This function is called the domestic aspect of the gold standard since it is concerned with stabilising the internal value of the currency.

Under gold standard, currency notes are exchangeable on demand for gold of equivalent value. Thus, note issue is fully backed by “old reserves and the growth of fiduciary note issue (without gold backing) are checked.

Moreover, since the amount of cash in the country is limited by the gold reserve held by the central bank and there must be a cash basis for credit creation, the capacity of the banks to create credit is also limited by the gold reserve. Thus under gold standard, total currency of the country is regulated by its gold reserves.

2. To Maintain the Stability of Exchange Rate:

Externally, gold standard aims at regulating and stabilising the exchange rate between the gold standard countries. This function is called the international aspect of the gold standard because it is concerned with stabilising the external value of the currency.

Under gold standard, every member country fixes the value of its currency in terms of certain weight of gold given purity.

Moreover, there is an undertaking given by each country’s monetary authority to purchase or sell gold in unlimited quantity at the officially fixed price.

Under these conditions, a stable relation exists between the money units of different gold standard countries and free movement of gold helps in maintaining the stability of exchange rates.

Thus, under gold standard, a gold reserve is maintained for two purposes: (a) as backing for note issue; and (b) to cover a deficit in the balance of payments and thus to maintain the stability of exchange rate.

While distinguishing between the two aspects or functions of gold standard, Crowther writes: “The cardinal point in the Domestic Gold Standard is clearly the proportion of volume enforced by the law between the gold reserves and the currency.

The essence of the International Gold Standard is the convertibility of the currency into gold- that is the fixed proportion of value between a unit of gold and a unit of currency.

300+ TOP Network Theorems MCQs and Answers Quiz

Network Theorems Multiple Choice Questions

1. Kirchhoff s current law states that
A. net current flow at the junction is positive
B. Hebraic sum of the currents meeting at the junction is zero
C. no current can leave the junction without some current entering it.
D. total sum of currents meeting at the junction is zero

Answer: B

2. According to Kirchhoffs voltage law, the algebraic sum of all IR drops and e.m.fs. in any closed loop of a network is always
A. negative
B. positive
C. determined by battery e.m.fs.
D. zero

Answer: D

3. Kirchhoffs current law is applicable to only
A. junction in a network
B. closed loops in a network
C. electric circuits
D. electronic circuits

Answer: A

4. Kirchhoffs voltage law is related to
A. junction currents
B. battery e.m.fs.
C. IR drops
D. both B. and C.
E. none of the above

Answer: D

5. Superposition theorem can be applied only to circuits having
A. resistive elements
B. passive elements
C. non-linear elements
D. linear bilateral elements

Answer: D

6. The concept on which Superposition theorem is based is
A. reciprocity
B. duality
C. non-linearity
D. linearity

Answer: D

7. Thevenin resistance Rth is found
A. by removing voltage sources along with their internal resistances
B. by short-circuiting the given two terminals
C. between any two ‘open’ terminals
D. between same open terminals as for Etk

Answer: D

8. An ideal voltage source should have
A. large value of e.m.f.
B. small value of e.m.f.
C. zero source resistance
D. infinite source resistance

Answer: C

9. For a voltage source
A. terminal voltage is always lower than source e.m.f.
B. terminal voltage cannot be higher than source e.m.f.
C. the source e.m.f. and terminal voltage are equal

Answer: B

10. To determine the polarity of the voltage drop across a resistor, it is necessary to know
A. value of current through the resistor
B. direction of current through the resistor
C. value of resistor
D. e.m.fs. in the circuit

Answer: B

Network Theorems MCQs

11. “Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen from the terminals of the load”. The above statement is associated with
A. Millman’s theorem
B. Thevenin’s theorem
C. Superposition theorem
D. Maximum power transfer theorem

Answer: D

12. “Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual
source resistances”.
The above statement is associated with
A. Thevenin’s theorem
B. Millman’s theorem
C. Maximum power transfer theorem
D. None of the above

Answer: B

13. “In any linear bilateral network, if a source of e.m.f. E in any branch produces a current I in any other branch, then same e.m.f. acting in the second branch would produce the same current / in the first branch”.
The above statement is associated with
A. compensation theorem
B. superposition theorem
C. reciprocity theorem
D. none of the above

Answer: C

14. Which of the following is non-linear circuit parameter ?
A. Inductance
B. Condenser
C. Wire wound resistor
D. Transistor

Answer: A

15. A capacitor is generally a
A. bilateral and active component
B. active, passive, linear and nonlinear component
C. linear and bilateral component
D. non-linear and active component

Answer: C

16. “In any network containing more than one sources of e.m.f. the current in any branch is the algebraic sum of a number of individual fictitious currents (the number being equal to the number of sources of e.m.f.), each of which is due to separate action of each source of e.m.f., taken in order, when the remaining sources of e.m.f. are replaced by conductors, the resistances of which are equal to the internal resistances of the respective sources”.
The above statement is associated with
A. Thevenin’s theorem
B. Norton’s theorem
C. Superposition theorem
D. None of the above

Answer: C

17. Kirchhoff s law is applicable to
A. passive networks only
B. a.c. circuits only
C. d.c. circuits only
D. both a.c. as well d.c. circuits

Answer: D

18. Kirchhoff s law is not applicable to circuits with
A. lumped parameters
B. passive elements
C. distributed parameters
D. non-linear resistances

Answer: C

19. Kirchhoff s voltage law applies to circuits with
A. nonlinear elements only
B. linear elements only
C. linear, non-linear, active and passive elements
D. linear, non-linear, active, passive, time varying as wells as time-in-variant elements

Answer: D

20. The resistance LM will be
A. 6.66 Q
B. 12 Q
C. 18Q
D. 20Q

Answer: A

21. For high efficiency of transfer of power, internal resistance of the source should be
A. equal to the load resistance
B. less than the load resistance
C. more than the load resistance
D. none of the above

Answer: B

22. Efficiency of power transfer when maximum transfer of power c xerosis
A. 100%
B. 80%
C. 75%
D. 50%

Answer: D

23. If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is
A. 10 Q
B. 20 Q
C. 30 Q
D. 40 Q

Answer: C

24. For maximum transfer of power, internal resistance of the source should be
A. equal to load resistance
B. less than the load resistance
C. greater than the load resistance
D. none of the above

Answer: A

25. If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be
A. a voltage source
B. a current source
C. both of above
D. none of the above

Answer: A

26. The circuit whose properties are same in either direction is known as
A. unilateral circuit
B. bilateral circuit
C. irreversible circuit
D. reversible circuit

Answer: B

27. In a series parallel circuit, any two resistances in the same current path must be in
A. series with each other
B. parallel with each other
C. series with the voltage source.’
D. parallel with the voltage source

Answer: A

28. The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as
A. non-linear circuit
B. linear circuit
C. bilateral circuit
D. none of the above

Answer: A

29. A non-linear network does not satisfy
A. superposition condition
B. homogeneity condition
C. both homogeneity as well as superposition condition
D. homogeneity, superposition and associative condition

Answer: C

30. An ideal voltage source has
A. zero internal resistance
B. open circuit voltage equal to the voltage on full load
C. terminal voltage in proportion to current
D. terminal voltage in proportion to load

Answer: A

31. A network which contains one or more than one source of e.m.f. is known as
A. linear network
B. non-linear network
C. passive network
D. active network

Answer: D

32. The superposition theorem is applicable to
A. linear, non-linear and time variant responses
B. linear and non-linear resistors only
C. linear responses only
D. none of the above

Answer: C

33. Which of the following is not a nonlinear element ?
A. Gas diode
B. Heater coil
C. Tunnel diode
D. Electric arc

Answer: B

34. Application of Norton’s theorem to a circuit yields
A. equivalent current source and impedance in series
B. equivalent current source and impedance in parallel
C. equivalent impedance
D. equivalent current source

Answer: A

35. Millman’s theorem yields
A. equivalent resistance
(6) equivalent impedance
C. equivalent voltage source
D. equivalent voltage or current source

Answer: D

36. The superposition theorem is applicable to
A. voltage only
B. current “only
C. both current and voltage
D. current voltage and power

Answer: C

37. Between the branch voltages of a loop the Kirchhoff s voltage law imposes
A. non-linear constraints
B. linear constraints
C. no constraints
D. none of the above

Answer: B

38. A passive network is one which contains
A. only variable resistances
B. only some sources of e.m.f. in it
C. only two sources of e.m.f. in it
D. no source of e.m.f. in it

Answer: D

39. A terminal where three on more branches meet is known as
A. node
B. terminus
C. combination
D. anode

Answer: A

40. Which of the following is the passive element ?
A. Capacitance
B. Ideal current source
C. Ideal voltage source
D. All of the above

Answer: A

41. Which of the following is a bilateral element ?
A. Constant current source
B. Constant voltage source
C. Capacitance
D. None of the above

Answer: C

42. A closed path made by several branches of the network is known as
A. branch
B. loop
C. circuit
D. junction

Answer: B

43. A linear resistor having 0 < R < °o is a
A. current controlled resistor
B. voltage controlled resistor
C. both current controlled and voltage controlled resistor
D. none of the above

Answer: C

44. A star circuit has element of resistance R/2. The equivalent delta elements will be
A. R/6
B. fi?
C. 2R
D. 4R

Answer: B

45. A delta circuit has each element of value R/2. The equivalent elements of star circuit with be
A. RIG
B. R/3
C. 2R
D. 3R

Answer: A

46. In Thevenin’s theorem, to find Z
A. all independent current sources are short circuited and independent voltage sources are open circuited
B. all independent voltage sources are open circuited and all independent current sources are short circuited
C. all independent voltage and current sources are short circuited
D. all independent voltage sources are short circuited and all independent current sources are open circuited

Answer: D

47. While calculating Rth in Thevenin’s theorem and Norton equivalent
A. all independent sources are made dead
B. only current sources are made dead
C. only voltage sources are made dead
D. all voltage and current sources are made dead

Answer: A

48. The number of independent equations to solve a network is equal to
A. the number of chords
B. the number of branches
C. sum of the number of branches and chords
D. sum of number of branches, chords and nodes

Answer: A

49. The superposition theorem requires as many circuits to be solved as there are
A. sources, nodes and meshes
B. sources and nodes
C. sources
D. nodes

Answer: C

50. Choose the incorrect statement.
A. A branch formed by the parallel connection of any resistor R and open circuit has the characteristic of an open circuit.
B. A branch formed by the parallel connection of any resistor R and a short circuit has the characteristic of a short circuit.
C. A branch formed by the series connection of any resistor R and an open circuit has the characteristic of an open circuit.
D. A branch formed by the series connection of any resistor R and a short circuit has the characteristic of resistor R.

Answer: A

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