This set of Machine Tools and Machining Inteview Questions and Answers for freshers focuses on “Lathe : Operations”.
1. For lathe operations, work piece can be hold _____
a) between centres
b) on mandrel
c) either between centres or on mandrel
d) none of the mentioned
View Answer
Explanation: Work piece can be hold either between centers or on mandrel. Mandrels are used for holding hollow workpieces for turning concentric to the bore.
2. Which of the following is used to drive the work piece?
a) carriers
b) catch plates
c) both carriers and catch plates
d) none of the mentioned
View Answer
Explanation: Work piece can be driven by using both of these. Catch plates are either screwed or bolted to the nose of the tailstock spindle while the carriers consists of a cast iron or forged steel body.
3. Drilling is performed by holding the work by a chuck.
a) true
b) false
View Answer
Explanation: It can be seen from the working of lathe operations. Several types of chucks are there like 4 jaw chuck, 3 jaw chuck and so on.
4. Knurling can be performed by special attachments.
a) true
b) false
View Answer
Explanation: This is false. Knurling can be done by a chuck on holding work piece between centres.
5. Grinding can be performed by______
a) using faceplates or angle plates
b) using chucks
c) special attachments
d) none of the mentioned
View Answer
Explanation: Grinding can be done by special attachments. Grinding is a type of machining using an abrasive type of wheel as the cutting tool.
6. Taper boring and the under boring can be performed by______
a) centers
b) face plates or angle plates
c) special attachments
d) none of the mentioned
View Answer
Explanation: Both types of plates can be used for this purpose. A face plate consists of a circular disk bored out and threaded to sit the nose of the lathe spindle while angel plate is a cast iron plate having two faces machined to make them absolutely at right angles to each other.
7. Milling can be performed by _____
a) centres
b) face plates or angel plates
c) chucks
d) special attachments
View Answer
Explanation: Milling can be performed by special attachments. Milling machine is a machine tool that removes metal as the work is fed against a rotating multipoint cutter.
8. Spinning can be done by_____
a) centres
b) face plates or angle plates
c) special attachments
d) none of the mentioned
View Answer
Explanation: This operation can be done by using centres. Spining winding is also done by this method.
9. Reaming and counter boring can be performed by______
a) centres
b) face plates and angle plates
c) special attachments
d) none of the mentioned
View Answer
Explanation: Both types of operations can be performed by using plates. Apart from that, parting off, internal thread cutting, undercutting are also performed by this method.
10. Eccentric turning can be performed by using special attachments.
a) true
b) false
View Answer
Explanation: This is false. Eccentric type of turning can be performed by using centres or chucks.
Sanfoundry Global Education & Learning Series – Machine Tools and Machining.
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