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Machinist
Machinist Set-1
Heat Treatment
26

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

26) During heat treatment when carbon is dissolved to form solid solution, it is known as

Ferrite

Pearlite

Austenite

Cementite

Answer is:

Austenite

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

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

27) Which one of the following is the solid carburizing material ?

Charcoal

Petrol

Ammonia

Kerosene

Answer is:

Charcoal

28) While hardening, after heating the steel to the required temperature, it is held at that temperature as soaking time for normally

5 minutes for 10 mm thickness

10 minutes for 5 mm thickness

2 minutes for 20 mm thickness

20 minutes for 2 mm thickness

Answer is:

5 minutes for 10 mm thickness

29) Which one of the following quenching media is used for hardening H.S.S. tool ?

Water

Brine solution

Oil

Soda water

Answer is:

Oil

30) What is the hardening temperature for H.S.S. tool ?

1250 Degree Centigrade

950 Degree Centigrade

850 Degree Centigrade

750 Degree Centigrade

Answer is:

1250 Degree Centigrade

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

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