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Machinist
Machinist Set-1
Heat Treatment
19

Heat Treatment MCQ - Machinist(Set-1) with Answers

19) The purpose of heat treatment is

To change the mechanical properties of steel

To change the internal structure of steel

To change the appearance of the component

To change the chemical properties of steel

Answer is:

To change the mechanical properties of steel

Heat Treatment MCQ - Machinist(Set-1) with Answers

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Related Heat Treatment MCQ - Machinist(Set-1) with Answers

20) One component of C50 steel is heated to 830 Degree Centigrade, soaked it for some time and then quenched in oil. Again it is heated to 600 Degree Centigrade and quenched in oil. Name this process of heat treatment.

Annealing

Normalizing

Hardening and tempering

Case hardening

Answer is:

Hardening and tempering

21) Which one of the following groups of quenching media is in order of their severity of the cooling rate, i.e. from slow to rapid cooling ?

Oil, forced air, brine solution

forced air, oil, brine solution

Brine solution, oil, forced air

Forced air, brine solution, oil

Answer is:

forced air, oil, brine solution

22) Which one of the following processes is adopted to improve the internal structure of steel, which has been subjected to severe hammering ?

Hardening

Annealing

Normalizing

Tempering

Answer is:

Normalizing

Which one of the following processes is adopted to improve the internal structure of steel, which has been subjected to severe hammering ?

23) Which one of the following structures of steel is obtained due to the drastic cooling from the austenite structure ?

Pearlite

Cementite

Matensite

Troostite

Answer is:

Matensite

Heat Treatment MCQ - Machinist(Set-1) with Answers

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