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Machinist
Machinist Set-1
Lathe
152

Lathe MCQ - Machinist(Set-1) with Answers

152) A carbide tipped tool with blue marking is used on a lathe. Which one of the following materials can be machined with this tool ?

Brass

Steel

Plastic

Grey cast iron

Answer is:

Steel

Lathe MCQ - Machinist(Set-1) with Answers

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

153) The fingers of a fixed steady rest are set to support a lengthy workpiece held in a Four-jaw chuck. The fingers are adjusted and set when the workpiece is

trued at the chuck and the work is stationary

trued at the tailstock end when the work is running at slow rpm

trued at both ends and work is stationary

trued at both ends when the work is running at slow rpm

Answer is:

trued at both ends and work is stationary

154) A taper for 10 mm length is produced on a workpiece by plunge cut using a form tool. The chatter marks are seen on the taper surface even though the recommended cutting speed is used and the workpiece is held rigidly. Which one of the following is a cause

The tool material is soft

The tool overhanging is more than required

The carriage is not locked to the bed

The automatic feed is not used

Answer is:

The tool overhanging is more than required

155) A metric self-releasing taper is specified as ISO 80. The number indicates that

length of taper is 80 mm

big diameter of taper is 80 mm

small diameter of taper is 80 mm

diameter up to which the mating parts match

Answer is:

big diameter of taper is 80 mm

156) The graduations are marked at the base of the tailstock. To offset the body these graduations are given in

Degrees

Taper per foot

mm

Radians

Answer is:

Taper per foot

Lathe MCQ - Machinist(Set-1) with Answers

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