This set of Machine Tools Multiple Choice Questions & Answers (MCQs) focuses on “Taper Shank Twist Drill Machine”.
1. Point consists of a_____ center.
a) dead
b) live
c) can’t say anything
d) none of the mentioned
View Answer
Explanation: Point consists of a dead center. Dead center is edge which is sharp situated at the extreme tip of the drill.
2. The cone-shaped end, which does the cutting is the_____
a) shank
b) point
c) tang
d) none of the mentioned
View Answer
Explanation: As per the definition of point. This part performs the drilling work. Point is the very important for the drilling operation.
3. Which of the following does the point consist?
a) lips
b) cutting edges
c) heel
d) all of the mentioned
View Answer
Explanation: The point consists of all these things. Cutting edges of drill are known as lips. Heel is a portion of this point back from the cutting edge.
4. Which of the following is the driving end of the drill?
a) tang
b) flute
c) shank
d) land
View Answer
Explanation: Shank is the driving end of the drill. This shank is clamped in the spindle.
5. Which of the following is the type of shank?
a) taper shank
b) straight shank
c) taper shank and straight shank both
d) none of the mentioned
View Answer
Explanation: Both taper shank and straight shank are the types of it. Straight shank drill uses a chuck while taper shank uses self holding taps.
6. Taper shank is used for______ diameter drills.
a) small
b) large
c) both large and small
d) none of the mentioned
View Answer
Explanation: For large diameter, taper shank is used. Self holding taps of this shank fits easily into the drill spindle and can perform the job easily.
7. Body clearance is the part of body which has been reduced.
a) true
b) false
View Answer
Explanation: Body clearance is a part which is reduced with a purpose to cut down the friction between the drill and the wall of the hole.
8. Flute fits into the slot of the drilling machine.
a) true
b) false
View Answer
Explanation: This is false. Tang fits into the slot of the drilling machine.
9. Which of the following is not the part of a body?
a) land
b) margin
c) flute
d) none of the mentioned
View Answer
Explanation: All are parts of body. Land and margin are synonyms. Apart from these, body clearance is also the part of body.
10. ______ are the spiral grooves which run to the length of the drill.
a) tangs
b) flutes
c) shanks
d) none of the mentioned
View Answer
Explanation: As per the definition of flutes. These flutes curl the chip strongly for the purpose of easier removal.
11. The tang allows the coolant to flow to the cutting edge.
a) true
b) false
View Answer
Explanation: This is false. The flutes allow this. The flutes also allows the flow of lubricants.
12. The diameter of the drill is measured across the land/margin.
a) true
b) false
View Answer
Explanation: This is true. The land/margin is the narrow strip which extends to the entire length of the flutes.
13. The portion between the point and the shank is called______
a) body
b) drill
c) both body and drill
d) none of the mentioned
View Answer
Explanation: Both terms can be used for this. The body is generally made of flute, margin and body clearance.
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