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Machinist Set-1
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147

Lathe MCQ - Machinist(Set-1) with Answers

147) The amount of tailstock offset for taper turning is done by the set screws provided. The procedure to be followed is :

Loosen both screws and push the body to the amount of offset

Loosen both the screws and push the base to the amount of offset

Loosen the screws opposite to the direction of movement and tighten the other screw

Loosen the screw on the direction of movement and tighten the other screw

Answer is:

Loosen the screws opposite to the direction of movement and tighten the other screw

Lathe MCQ - Machinist(Set-1) with Answers

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Related Lathe MCQ - Machinist(Set-1) with Answers

148) When rough turning a workpiece with a carbide tool long curly chips are formed. Which one of the following is the right way of getting rid of this kind of chips ?

Stop the power feed at intervals so that the chip breaks

Change the rake angle

Provide chip breaker on the tool

Use a metal hook and pull away the chips

Answer is:

Provide chip breaker on the tool

149) You want to fix an irregularly shaped workpiece on a lathe, which one of the following accessories is the most appropriate ?

Three-jaw self-centering chuck

Driving plate

Face plate

Catch plate

Answer is:

Face plate

Explanation:

When fixing irregular shaped work-peice on lathe, face plate in the most suitable accessori.

You want to fix an irregularly shaped workpiece on a lathe, which one of the following accessories is the most appropriate ?

150) A brass shaft is to be turned to a surface roughness Ra = 0.8, with high cutting speed. Which one of the following cutting tool material is most suitable ?

High speed steel

High carbon steel

Low alloy steel

Cemented carbide

Answer is:

Cemented carbide

A brass shaft is to be turned to a surface roughness Ra = 0.8, with high cutting speed. Which one of the following cutting tool material is most suitable ?

151) Which one of the following statements is true with reference to the tool life ?

Time between starting and finishing a job

Total time for turning work including regarding of tool

Time between two successive regrinds

Time between starting of metal cutting and tool wear out

Answer is:

Time between two successive regrinds

Lathe MCQ - Machinist(Set-1) with Answers

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