This set of Machine Tools Multiple Choice Questions & Answers (MCQs) focuses on “Sensitive Bench Drilling Machine”.
1. Sensitive bench drilling machine is quite large in size.
a) true
b) false
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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
View Answer
Explanation: 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.
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