Machine Tools Multiple Choice Questions on “Lathe : Feed Mechanism”.
1. Which type of feeding does feed mechanism enables?
a) automatic
b) manual
c) automatic and manual both
d) none of the mentioned
Answer: a
Clarification: Feed mechanism enables automatic feed. It enables feeding for the tool longitudinal and traversely whenever needed.
2. Which of the following indicates the benefit of automatic feeding?
a) the finish on the work will be better
b) the feeding of the tool will be at a nonuniform continuous rate
c) accuracy will be more
d) all of the mentioned
Answer: d
Clarification: All sentences are true except the one which says that the feeding of the tool will be at a nonuniform continuous rate. Actually, the feeding of the tool will be at a uniform continuous rate.
3. Automatic feed requires more time to finish the work.
a) true
b) false
Answer: b
Clarification: This is false. Manual feed requires more time for finishing the work. Automatic feed requires less time to finish the work.
4. Which of the following is the part of feed mechanism?
a) spindle gear
b) tumbler gear unit
c) apron mechanism
d) all of the mentioned
Answer: d
Clarification: All are the parts of feed mechanism. Apart from spindle gear, tumbler gear unit and apron mechanism, there are some other parts like fixed stud gear, change gear unit, quick change gear box and so on.
5. Feed mechanism requires manual labor.
a) true
b) false
Answer: b
Clarification: This is work. Feed mechanism removes the need of manual labor. It works automatically.
6. The feed of a cutting tool in a lathe work is the distance the tool advances for each revolution.
a) true
b) false
Answer: a
Clarification: This is the definition of the feed. This feed is also expressed in mm/revolution. In british system, it is expressed in inch per revolution.
7. What happen if feed increases?
a) cutting time increases
b) cutting time decreases
c) no effect on cutting time
d) none of the mentioned.
Answer: b
Clarification: Increased feed always reduces the cutting time. As the feed is increased, the speed of the cutting is increased and as the speed of the cutting is increased, its time will definitely decreased.
8. Increased feed_____
a) increases tool’s life
b) decreases tool’s life
c) no effect on tool’s life
d) none of the mentioned
Answer: b
Clarification: Increased feed greatly reduces the tool life. As the feed is increased, its speed will also increased. So forces acting on the tool will be more stronger, more powerful. Hence, it reduces the tool’s life.
9. Which of the following is not the part of the feed mechanism?
a) fixed stud gear
b) quick change gear box
c) feed shaft
d) none of the mentioned
Answer: d
Clarification: These all are the parts of the feed mechanism. Due to these all parts, it works more accurately and give the more-better surface finish.
10. The feed mechanism enables feed for the tool______ whenever needed.
a) longitudinally
b) traversely
c) longitudinal and traversely both
d) none of the mentioned
Answer: c
Clarification: The proportionate tool movement for each revolution of the work is achieved through all units of the feed mechanism.