SOLID STATE SWITCHING CIRCUITS Questions :-
1. A switch has ………………
- One state
- Two states
- Three states
- None of the above
Ans : 2
2. A relay is ……….. switch
- A mechanical
- An electronic
- An electromechanical
- None of the above
Ans : 3
3. The switch that has the fastest speed of operation is ………….. switch
- Electronic
- Mechanical
- Electromechanical
- None of the above
Ans : 1
4. The most inexpensive switch is ………….. switch
- Electronic
- Mechanical
- Electromechanical
- None of the above
Ans : 1
5. The main disadvantage of a mechanical switch is that it………….
- Is operated mechanically
- Is costly
- Has high inertia
- None of the above
Ans : 3
6. When a transistor is driven to saturation, ideally the output is ………………
- VCC
- 0
- VCC/2
- 2VCC
Ans : 2
7. The maximum speed of electronic switch can be ………….. operations per second
104
10
1000
109
Ans : 4
8. A relay is superior to a mechanical switch because it ……………
Is relatively inexpensive
Does not require moving contacts
Combines control with power amplification
None of the above
Ans : 3
9. When a transistor is driven to cut off, ideally the output is …………..
VCC
0
VCC/2
VCC/3
Ans : 1
10. ………………. multivibrator is a square wave oscillator
Monostable
Astable
Bistable
None of the above
Ans : 2
11. An astable multivibrator has ………….
One stable state
Two stable states
No stable state
None of the above
Ans : 3
12. If d.c. supply of 10 V is fed to a differentiating circuit, then output will be …….
20 V
10 V
0 V
None of the above
Ans : 3
13. If the input to a differentiating circuit is a saw-tooth wave, then output will be ………….
Square
Triangular
Sine
Rectangular
Ans : 4
14. A bistable multivibrator has …………..
Two stable states
One stable state
No stable state
None of the above
Ans : 1
15. If a square wave is fed to a differentiating circuit, the output will be …………
Sine wave
Sharp narrow pulses
Rectangular wave
Triangular wave
Ans : 2
16. An integrating circuit is a simple RC series circuit with output taken across ………
Both R and C
R
C
None of the above
Ans : 3
17. For an integrating circuit to be effective , the RC product should be ………. the time period of the input wave
5 times greater than
5 times smaller than
Equal to
At least 10 times greater than
Ans : 4
18. A differentiating circuit is a simple RC circuit with output taken across …………..
R
C
Both R and C
None of the above
Ans : 1
19. A monostable vibrator has …………..
No stable state
One stable state
Two stable states
None of the above
Ans : 2
20. The multivibrator which generates square wave of its own is the ………… multivibrator
Monostable
Bistable
Astable
None of the above
Ans : 3
21. For a differentiating circuit to be effective, the RC product should be ………… the time period of the input wave
Equal to
5 times greater than
5 times smaller than
At least 10 times greater than
Ans : 4
22. When a rectangular voltage waveform is applied to a capacitor, then the current waveform is ……………
Rectangular
Sinusoidal
Sawtooth
Square
Ans : 1
23. The positive clipper is that which removes the …………………. half-cycles of the input voltage.
Negative
Positive
Both positive and negative
None of the above
Ans : 2
24. A clamping circuits adds ………………… component to the signal
c.
c.
both d.c. and a.c.
none of the above
Ans : 1
25. One would find a clamping circuit in ………………..
Receiving antenna
Radio transmitter
Radio receiver
Television receiver
Ans : 4
26. When a transistor is used as an amplifier, it is operated in the ……………… region
Off
Saturation
Active
None of the above
Ans : 3
27. When the transistor (CE arrangement) is in the cut off region, the collector current is ……………..
ICBO
ICEO
(ß + 1) ICEO
IC(sat)
Ans : 2
28. A negative clipper removes the ……………… half-cycles of the input voltage
Negative
Positive
Both positive and negative
None of the above
Ans : 1
29. If the input to an integrating circuit is a succession of alternating positive and negative pulses of very short duration, the output will be …………… wave
Rectangular
Triangular
Sine
Square
Ans : 4
30. In a multivibrator, we have ………. feedback.
- Negative
- 100 % positive
- Both positive and negative
- None of the above
Ans : 2