1. The body of a three-jaw chuck has three openings _____ apart to assemble the jaws and operate them ?

120°

90°

60°

45°

Answer: 120°

Explanation:


2. The sliding surface of the lathe bed is ?

Flame hardened

Normalized

Case hardened

Tempered

Answer: Flame hardened

Explanation:


3. In a lathe, a follower study is fixed on the ?

saddle

apron

bed

tail stock

Answer: saddle

Explanation:


4. study rest pad of lathe accessories are made of which of the following materials ?

brass

bronze

lead

silver

Answer: brass

Explanation:


5. Which type of feed is needed for facing operation in lathe ?

longitudinal

cross

both a and b

none of the above

Answer: cross

Explanation:


6. combination chuck jaws may be operated as ?

either independently or together

independently

together

none of these

Answer: independently

Explanation:


7. Which one of the following is the correct formula for taper ratio ?

D-d/l

D-d/2l

D+d/l

D+d/2l

Answer: D-d/l

Explanation:


8. Which one of the following operations cannot be done on a capstan lathe ?

Under cutting for a length more than the tool width

knurling

step boring

Taper turning in between centres

Answer: Taper turning in between centres

Explanation:


9. normally the carriage of lathe travels along which axis ?

horizontal axis

vertical axis

bending axis

none of the above

Answer: horizontal axis

Explanation:


10. By using a single point tool, the thread cutting on a lathe moves in a ______ path ?

helix

cycloid

rake

blind

Answer: helix

Explanation: