Category: Machine Tools & Machining Objective Questions

Machine Tools Multiple Choice Questions on “Apron”.

1. Which of the following contains friction clutches?
a) saddle
b) cross slide
c) swivel base
d) apron
Answer: d
Clarification: Apron includes friction clutches. Friction clutches are there in apron for the purpose of automatic feeding.

2. The layout of the_____ includes an interlocking device.
a) saddle
b) cross slide
c) apron
d) swivel base
Answer: c
Clarification: The layout of the apron includes an interlocking tool which prevents or stops the simultaneous engagement of feed shaft and the lead screw.

3. The apron hand wheel can be turned to move carriage back and forth longitudinally with the help of hand. The complementary motion to this is obtained by______ handle.
a) longitudinal feed
b) cross feed
c) angular feed
d) none of the mentioned
Answer: b
Clarification: The complementary motion to this is obtained by the cross feed handle which moves the cross slide and forth across the saddle.

4. In apron, which type of feed is used to operate the carriage?
a) hand feed
b) power feed
c) hand feed and power feed both
d) none of the mentioned
Answer: c
Clarification: Both type of feed is used to operate the carriage. Although hand feed takes more time and gives less accuracy while power feed takes less time and gives more accuracy.

5. In which position, the section lever can be kept?
a) up and down
b) up, down and neutral
c) only neutral
d) none of the mentioned
Answer: b
Clarification: The section lever can be kept in all above mentioned positions to handle the feed. This apron is a part of lathe hangs over the front of the feed.

6. With the help of how many half nuts, apron provide power feed to the carriage at the time of thread cutting?
a) 1
b) 2
c) 3
d) 4
Answer: b
Clarification: Generally 2 half nuts are used for this purpose. In addition, there is a split nut which engages when required with the lead screw, when cutting either internal or external thread.

7. In Apron, power is transmitted from spindle to_____
a) lead screw
b) feed rod
c) lead screw and feed rod both
d) none of the mentioned
Answer: c
Clarification: Power is transmitted to both lead screw and feed rod from spindle. The layout of this apron includes an interlocking device which prevents the simultaneous engagement of the feed shaft and the lead screw.

8. Which of the following mechanism is used for the purpose of power transmission from the spindle?
a) spindle gear arrangement
b) tumbler gear arrangement
c) spindle gear arrangement and tumbler gear arrangement both
d) none of the mentioned
Answer: c
Clarification: These both gear arrangements are used for the purpose of power transmission. In addition to this, there is hand wheel in apron which can be turned to move carriage back and forth longitudinally by hand for manual power.

9. A worm is fixed on the lead screw.
a) true
b) false
Answer: b
Clarification: This is false. A warm is fixed on the feed rod with the help of the sliding key.

10. Which of the following is suspended from the saddle?
a) apron
b) gear box
c) tool post
d) none of the mentioned
Answer: a
Clarification: Apron is fastened to the spindle and hangs over the front of the bed. It is the part of carriage.

Machine Tools and Machining Questions and Answers for experienced on “Lathe : Taper and Taper Turning”.

1. A taper may be defined as a uniform gradual_____ along the length of the job.
a) increase
b) decrease
c) increase or decrease
d) none of the mentioned
Answer: c
Clarification: A taper may be defined as a uniform gradual increase or decrease along the length of the job. Taper turning can be measured by from tool method, tailstock offset method, compound slide method and so on.

2. The taper is measured in terms of radius along the length of the job.
a) true
b) false
Answer: b
Clarification: This is false. The taper is measured in terms of diameter along the length of job.

3. In a lathe, taper turning means to produce a_____ surface by gradually decreasing the value of diameter from a cylindrical work piece.
a) conical surface
b) flat surface
c) both conical and flat surface
d) none of the mentioned
Answer: a
Clarification: Taper turning means to produce a conical surface by gradually decreasing the value of diameter from a cylindrical work piece lathe. Two types of tapers are there: internal and external taper.

4. Which of the following is not true for taper turning?
a) taper turning is one type of lathe operation
b) the amount of taper is specified by the ratio of its length to the difference in the diameter of the taper
c) amount of taper is designated by the letter K
d) none of the mentioned
Answer: b
Clarification: All the sentences are true except the sentence which says that the amount of taper is specified by the ratio of its length to the difference in the diameter of the taper. The amount of taper is specified by the ratio of difference in the diameters of the taper to its length.

5. Amount of taper in a work piece is termed as conicity.
a) true
b) false
Answer: a
Clarification: It can be easily understood by the definition of taper. For taper or conicity feed is provided. Two types of feeds are there: manual feed and power feed.

6. The SI unit of taper is_____
a) meter
b) centimeter
c) millimeter
d) none of the mentioned
Answer: d
Clarification: Taper is ratio of same quantity. It is unitless.

7. Full taper angle is also known as angle of taper.
a) true
b) false
Answer: b
Clarification: This is false. Half taper angle is also known as angle of taper.

8. Which of the following is the right formula for taper?
a) K= (D-d) / L
b) K= L / (D-d)
c) K= D/ L
d) none of the mentioned
Answer: a
Clarification: K= (D-d) / L – It is the basic formula used for calculating taper. Here k=taper, D and d are diameters and l is length.

9. Find the value of K. D= 90 mm, d=80 mm, L=1cm.
a) 1
b) 10
c) 100
d) none of the mentioned
Answer: a
Clarification: 1 cm = 10 mm. From the formula K= (D-d)/L, K can be easily calculated.

10. Find the value of d. K=1/10, L= 10 cm, D=65 mm.
a) 45 mm
b) 55 cm
c) 75 mm
d) none of the mentioned
Answer: d
Clarification: Answer should be 55 mm. It can be easily calculated from the formula K= (D-d)/L.

11.The mentioned figure indicates_____

a) knurling
b) parting off
c) taper turning
d) none of the mentioned
Answer: c
Clarification: As per the definition of the taper turning. Taper is a shape in which diameters of the both ends are different. It can be easily seen from this figure.

Machine Tools and Machining for Experienced,

Machine Tools Multiple Choice Questions on “Sensitive Bench Drilling Machine”.

1. Sensitive bench drilling machine is quite large in size.
a) true
b) false
Answer: b
Clarification: This is false. Sensitive bench drilling machine is small in size.

2. Sensitive bench drilling machine is used for____
a) heavy work
b) light work
c) both heavy and light work
d) none of the mentioned
Answer: b
Clarification: It is used only for light work as it is not a big machine. It is comparatively small machine.

3. Sensitive bench drilling machine is capable of drilling holes up to ______ mm diameter.
a) 1.25
b) 12.5
c) 2.5
d) 25
Answer: b
Clarification: It can drill up to 12.5 mm diameter as it is only used for small work, not for heavy work.

4. For normal drilling, the work surface of sensitive bench drilling machine is kept vertical.
a) true
b) false
Answer: b
Clarification: This is false. For normal drilling, the work surface is kept horizontal.

5. Sensitive type of drilling machine is the simplest type of drilling machine.
a) true
b) false
Answer: a
Clarification: It is the simplest type of drilling machine as it is very small and again used for only light work.

6. Which of the following is the part of sensitive bench drilling machine?
a) driving motor
b) cone pulley
c) sleeve
d) all of the mentioned
Answer: d
Clarification: All are the parts of this machine. Apart from these, chuck, spindle lock, deep gauge and stop, belt guard etc. are also the part of this machine.

7. The base of the sensitive bench drilling machine is____
a) free
b) mounted on a bench
c) rotary
d) none of the mentioned
Answer: b
Clarification: The base is mounted on a bench. Its not free and again it doesn’t have any rotary motion.

8. Machine spindle possesses tapered hole in sensitive bench drilling machine.
a) true
b) false
Answer: a
Clarification: As per the construction of this machine. Tapered hole means a hole which is thinner towards one end compare to other end.

9. In sensitive bench drilling machine, the drills are fitted in ____
a) chuck
b) spindle
c) either in chuck or in spindle
d) none of the mentioned
Answer: c
Clarification: The drills are fitted in chucks or in the spindle. There are various types of chuck like two jaw chuck, three jaw chuck, four jaw chuck etc.

10. If the holes are to be drilled at an angle, the table can be titled.
a) true
b) false
Answer: a
Clarification: It can be seen from the construction of this machine. If we want to make hole at any angle, the table can be titled to obtain proper position and that’s the reason this machine can make holes at various angles.

11. Which of the following is wrong about sensitive bench drilling machine?
a) different spindle speeds can be achieved
b) we can change the position of belt in the stepped pulley
c) there is some space between the work table and base
d) none of the mentioned
Answer: d
Clarification: Nothing is wrong. All are right. Some space is the between the work table and base, various type of spindle speed can also be achieved and again we can also change the position of the belt in stepped pulley.

Machine Tools Multiple Choice Questions on “Types of Shaper”.

1. According to the type of mechanism used for giving reciprocating motion to the ram, shaper can be classified as______
a) crank type
b) geared type
c) both crank type and geared type
d) none of the mentioned
Answer: c
Clarification: According to the type of mechanism used for giving reciprocating motion to the ram, shaper can be classified as both crank type and geared type. Here the ram means the reciprocating member of the shaper which houses a screwed shaft.

2. According to the type of design of the table, lathe can be classified as_____
a) standard shaper
b) universal shape
c) both standard shaper and universal shaper
d) none of the mentioned
Answer: c
Clarification: According to the type of design of the table, lathe can be classified as both standar shaper and universal shaper. Standard shaper is also known as plain shaper which has only two movements vertical and horizontal to get feed.

3. Push type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: c
Clarification: Push type shaper is type of shaper according to type of cutting stroke. In push type shaper, at the time when the ram is moving away/going away from the column, removal of metal is done.

4. horizontal type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: b
Clarification: horizontal type shaper is type of shaper according to position and travel of the ram. When we talk about horizontal shaper, it is mostly used for producing flat surfaces.

5. Draw type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: c
Clarification: Draw type shaper is type of shaper according to, type of cutting stroke. In this type of shaper, at the time when the ram is moving towards in the direction of column, the metal removal is done.

6. Travelling head type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: b
Clarification: Travelling head type shaper is type of shaper according to, position and travel of the ram. In workshop, if we have a machine that cannot be fixed on the machine or can not be moved at that time we use this shaper.

7. Hydraulic type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: d
Clarification: As per the classification of this machine, it can be classified according to the type of mechanism used for giving reciprocal motion to the ram. In hydraulic shaper, not a penny sound is produced. So this shaper machine can be termed as eco friendly machine to some extent.

8. In crank type shaper, for performing an operation a multi point cutting tool is employeed.
a) true
b) false
Answer: a
Clarification: This is false. In crank type shaper, for performing an operation a SINGLE point cutting tool is employed. The crank mechanism is used in order to drive reciprocating ram.

9. Vertical type shaper is type of shaper according to______
a) design of the table
b) position and travel of the ram
c) type of cutting stroke
d) none of the mentioned
Answer: b
Clarification: Vertical type shaper is type of shaper according to position and travel of the ram. In vertical type shaper ram has its motion in vertical direction, that’s why it is known as vertical shaper.

10. The shaper is a reciprocating type of machine tool primarily intended for producing flat surfaces.
a) true
b) false
Answer: a
Clarification: As per the definition of this machine. It is a reciprocating type machine introduced by James Nasmyth in 1836 for producing flat surfaces.

Machine Tools and Machining Puzzles on “Milling Cutting Tool”.

1. The cutting tool used in shaper is a _______ point cutting tool.
a) single
b) multi
c) double
d) none of the mentioned
Answer: a
Clarification: It is a single point cutting tool. For example, square nose tool, round nose tool etc. are the examples of the single point cutting tool.

2. Shaper is cutting tool having rake.
a) true
b) false
Answer: a
Clarification: Shaper is mostly used with the purpose to machine straight, flat surfaces and for that it has rake.

3. In a shaper, clearance is _______ to a lathe tool.
a) similar
b) different
c) can’t say anything
d) none of the mentioned
Answer: a
Clarification: Clearance is similar to lathe tool in shaper. Also some type of angles are also similar to lathe machine.

4. Tool angles are same in shaper as in lathe.
a) true
b) false
Answer: b
Clarification: Only some type of angles are similar in both machines. Tool angles are different in the case of shaper with respect to lathe.

5. Shaper tools are______
a) quite light
b) moderate
c) much more rigid
d) none of the mentioned
Answer: c
Clarification: Shape tools are much more rigid in order to make it able to perform jobs nicely, without any slip and with more accuracy..

6. Shaper tools are heavy weighted.
a) true
b) false
Answer: a
Clarification: As per the working principle of this machine, this tools should be heavy so as to provide strength to it so that it can perform heavy jobs.

7. In shaper, tools are able to withstand shock experienced by the cutting tool at the commencement of each cutting stroke.
a) true
b) false
Answer: a
Clarification: As per the manufacturing of this machine, this machine is highly strong enough to withstand any shock.

8. The bottom side of the table of a shaper has T slots for clamping the work.
a) true
b) false
Answer: b
Clarification: The bottom side doesn’t has it, the top side of the table of a shaper has T slots for clamping the work.

9. Which of the following method is used to support the work on the table?
a) clamped in a vice
b) clamped on the table
c) both clamped in a vice and clamped on the table
d) none of the mentioned
Answer: c
Clarification: Both methods are used to support the work on the table.Both these methods provide satisfactory result.

10. Which of the following method is not used to support the work on the table?
a) clamped on the angle plate
b) clamped on a V block
c) held between shaper index centre
d) none of the mentioned
Answer: d
Clarification: All are used to support the work on the table. As per the working principle of shaper, all these methods are used for different situations and all of them provide satisfactory result.

11. Which of the following tool is not used in shaper?
a) right hand finishing tool
b) square nose tool
c) left hand side facing tool
d) none of the mentioned
Answer: d
Clarification: These all are single point cutting tools, which are highly used in shaper because of their strength..

12. Round nose tool is used in both lathe and shaper.
a) true
b) false
Answer: a
Clarification: It is used in these both machine. Generally Finishing type tools have more round nose in order to provide a better finish..

13. Gooseneck tool is used in both lathe and shaper.
a) true
b) false
Answer: a
Clarification: Groseneck tool is used in both. Nowadays, groose neck punch and grooseneck webbing stretcher is also used in both.

14. Right hand roughing tool is used in_______.
a) lathe
b) shaper
c) both lathe and shaper
d) none of the mentioned
Answer: c
Clarification: It is used in these both machines in the starting for the roughing purpose which is one of the most important operation in machine tools..

15. Shaper is the most important machine tool after lathe and drilling machine.
a) true
b) false
Answer: a
Clarification: As per the definition of machine tools, lathe is the most important machine tool due to its versatility. Next is drilling machine followed by shaper.

To practice puzzles on all areas of Machine Tools and Machining,