1. The function of steady rest in lathe machine is ___________ ?

to preventing bending of long shaft due to cutting force

to avoid load on the lathe centres while turning long shaft

to reduce the load on the cutting tool while turning

to ensure to turn at higher cutting speed

Answer: to preventing bending of long shaft due to cutting force

Explanation:


2. Which one of the following statements indicates the principle followed in turning taper by offsetting the tail stock ?

The work axis is kept out of alignment with the lathe axis and the tool movement are parallel to lathe axis

The work axis is kept in line lathe axis and tool is made to move at an angle to lathe axis

The live and dead centres are moved in opposite directions to keep the work axis out of alignment with lathe axis

The work axis is kept out of alignment with the lathe axis and the tool is made to move at an angle to lathe axis

Answer: The work axis is kept out of alignment with the lathe axis and the tool movement are parallel to lathe axis

Explanation:


3. To turn an external angle having 60° included angle, the compound slide to be set to _______ ?

30°

60°

45°

90°

Answer: 60°

Explanation:


4. A spindle sleeve is to be assembled to the spindle nose to perform specific operation on a lathe, this sleeve has ____ ?

External and Internal morse taper

External jarno taper and Internal morse taper

External morse taper and Internal jarno taper

External and Internal jarno taper

Answer: External and Internal morse taper

Explanation:


5. A carbide tripped tool with blue mark on shank is used on a lathe. Which one of the following material can be machined with this tool ?

brass

aluminium

cast iron

steel

Answer: steel

Explanation:


6. Which one of the following on a lathe is used to give depth of cut ?

by adjusting the tool

cross slide

compound slide

top slide

Answer: cross slide

Explanation:


7. In a lathe, the compound rest is fitted on the top and to the front of the cross slide, which can swivelled horizontally through ?

45°

90°

180°

360°

Answer: 360°

Explanation:


8. In a turning operation the cutting fluid is used for ?

cooling the work peace only

cleaning the work peace

cleaning the machine tool

cooling the cutting tool and work peace

Answer: cooling the cutting tool and work peace

Explanation:


9. Which holding type is more accurate ?

3 jaw chuck

4 jaw chuck

both are equally accurate

a accuracy depends upon work peace

Answer: 4 jaw chuck

Explanation:


10. Which of the following is not a function of headstock ?

transmission of energy from the main motor to the job

to provide a solid base to the job that needs to be turned

arrangement for the position of the job holding device

to provide varying speed with the help of shaft gear and liver

Answer: to provide a solid base to the job that needs to be turned

Explanation: