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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

540 Unit 2 Material Science and Heat Treatment

17)   

At what temperature range does steel transition from ferrite to austenite?

A.
B.
C.
D.
Answer: B
18)   

Which non-ferrous metal is commonly used in aircraft manufacturing?

A.
B.
C.
D.
Answer: B
19)   

In the annealing process, what is the rate of cooling?

A.
B.
C.
D.
Answer: C
20)   

What is the main use of rubber in industrial applications? 

A.
B.
C.
D.
21)   

Steel contains which element that differentiates it from pure iron? 

A.
B.
C.
D.
22)   

What is the cooling medium used in the normalizing process? 

A.
B.
C.
D.
23)   

What is the primary advantage of alloy steel?

A.
B.
C.
D.
24)   

What microstructure forms when steel is cooled rapidly from its critical temperature?

A.
B.
C.
D.
25)   

Vulcanization improves which property of rubber?

A.
B.
C.
D.
26)   

Which type of cast iron is known for its excellent wear resistance? 

A.
B.
C.
D.
27)   

What is one of the major benefits of annealing?

A.
B.
C.
D.
28)   

Which steel has the lowest carbon content? 

A.
B.
C.
D.
29)   

Why is mica used as an insulating material?

A.
B.
C.
D.
30)   

What element is typically added during carburizing in case hardening?

A.
B.
C.
D.
31)   

What is the primary microstructure of steel at room temperature in its softest state?

A.
B.
C.
D.
32)   

What is the primary purpose of hardening? 

A.
B.
C.
D.