1. Which part of the lathe is not power driven ?

compound rest slide

cross slide

carriage

none of the above

Answer: compound rest slide

Explanation:


2. Which of the following mandrels is best suited for holding varying diameter work pieces ?

plain mandrel

step mandrel

collar mandrel

expansion mandrel

Answer: expansion mandrel

Explanation:


3. In a three-jaw chuck ?

Only cylindrical and hexagonal work can be held

Workpieces can be set for eccentric turning

Concentric circles are provided for approximate setting of jaws

A wide range of regular or irregular jobs can be held

Answer: Only cylindrical and hexagonal work can be held

Explanation:


4. ___ is a fixed unit of lathe on the left hand side whose function is to transmit the drive from the main motor to the work ?

tool post

bed

head stock

tailstock

Answer: head stock

Explanation:


5. Which of the following material uses highest cutting speed in machining ?

cast iron

aluminium

bronze

steel

Answer: aluminium

Explanation:


6. While facing a job in lathe, a pip left in the centre is caused due to ?

blunt tool

carriage is not locked

tool is not set in centre

improper clamping of tool

Answer: tool is not set in centre

Explanation:


7. For turning long taper with a small taper angle, the method of taper turning employed is ?

offsetting the tailstock

form tool plunging

swivelling the compound slide

combination of the lathe cross slide and the compound slide movement

Answer: offsetting the tailstock

Explanation:


8. When the big diameter of the taper is at the tail stock ends the off set is towards the ?

tail stock

operator

opposite side of operator

head stock

Answer: opposite side of operator

Explanation:


9. When the big diameter of the taper is at the tail stock ends the off set is towards the ?

tail stock

operator

opposite side of operator

head stock

Answer: opposite side of operator

Explanation:


10. A collet chuck is meant for the gripping of ?

heavy jobs

large diameter jobs

small jobs

small diameter jobs

Answer: small diameter jobs

Explanation: