Manufacturing & Production Engineering MCQ Question with Answer

Manufacturing & Production Engineering MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 43
A dense structure of a grinding wheel is used for

Hard materials

Brittle materials

Finishing cuts

All of these

Question No : 44
Cold working of steel is defined as working

At its recrystallisation temperature

Above its recrystallisation temperature

Below its recrystallisation temperature

At two thirds of the melting temperature of the metal

Question No : 45
Quality screw threads are produced by

Thread milling

Thread chasing

Thread cutting with single point tool

Thread casting

Question No : 46
Tool life is generally better when

Grain size of the metal is large

Grain size of the metal is small

Hard constituents are present in the microstructure of the tool material

None of the above

Question No : 47
Crack in grinding wheel is developed due to

High temperature developed at the contact of the wheel face and work

Grinding hard work

Low speed of wheel

High speed of wheel

Question No : 48
Which of the following statement is wrong?

The diamond is the hardest tool material and can run at cutting speeds about 50 times that of high speed steel tool.

The ceramic tools can be used at cutting speeds 40 times that of high speed steel tools.

The cemented carbide tools can be used at cutting speeds 10 times that of high speed steel tools.

The ceramic tools can withstand temperature upto 600°C only.

Question No : 49
In plunge grinding

The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face

The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face

The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face

The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face