This set of Machine Tools Multiple Choice Questions & Answers (MCQs) focuses on “Column Drilling Machine”.
1. Which type of work can be performed in column drill machine?
a) different job of material
b) different diameter of drill
c) different depth of drill
d) all of the mentioned
View Answer
Explanation: These all can be performed in column drill machine. That’s why it is commonly used in all industry. Its common machine and can’t used for heavy application.
2. Which of the following is not true for column drill machine?
a) it is very light
b) it is quite big in size
c) different types of works can be done in this machine
d) none of the mentioned
View Answer
Explanation: All sentences are true except the one which says that it is very light. In fact, it is very rigid and ragged machine
3. The production rate of the column drill machine is high.
a) true
b) false
View Answer
Explanation: This is false. Its production rate is comparatively low but it can perform the operation quite nicely and often used in industry.
4. Which of the following is not true for column drill machine?
a) it is strong machine structure
b) it is very powerful machine
c) it doesn’t allow high speed drilling
d) none of the mentioned
View Answer
Explanation: All the sentences are true except the one which says that it doesn’t allow high speed drilling. This machine allows high speed drilling.
5. Which of the following is not true for column drill machine?
a) accuracy is less
b) it is common type of drill machine used in industry
c) it is very rigid
d) none of the mentioned
View Answer
Explanation: All the sentences are true except the one which says that accuracy is less in column drill machine. Accuracy is comparatively high in this type of machine.
6. Which type of gear box does column drill machine possess?
a) speed gear box
b) feed gear box
c) both speed gear box and feed gear box
d) none of the mentioned
View Answer
Explanation: Both type of gear boxes are there in this machine. Now a days column drill machine are also available with hydraulic feed and multi spindle head.
7. The speed gear box and feed gear box are confined with the drilling head.
a) true
b) false
View Answer
Explanation: It can be easily seen from the construction of this machine. Drilling head is a heavy and most important part of the drilling machine where lever and other components are attached.
8. Column drill machine can be used for mass production.
a) true
b) false
View Answer
Explanation: This is false. It can’t be used for mass production. It can be only used for small production as it is very rigid and intended only for some specific purposes. The rate at which produce the output is quite low.
9. To enable the spindle speed, one can vary_____
a) speed of spindle
b) feed
c) both speed of spindle and feed
d) none of the mentioned
View Answer
Explanation: We van vary speed of spindle and feed to enable the spindle speed. This spindle speed is also termed as feed rate or peripheral speed.
10. Column drill machine can perform large diameter drills.
a) true
b) false
View Answer
Explanation: It is the application of this machine. This machine can perform high speed drilling with multi spindle head.
11. In which of the following machine, automatic feed is possible?
a) table top drill
b) column drill
c) pillar drill
d) all of the mentioned
View Answer
Explanation: In table top and pillar drill, only manual feed is possible but in case of column drill machine, automatic feed is possible.
12. Very odd types and heavy types jobs cannot be mounted and
machined in column drill.
a) true
b) false
View Answer
Explanation: This is false. Very odd and heavy types of jobs can be mounted easily machined in column drill.
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