Engineering Materials MCQ Questions & Answers | Mechanical Engineering Page-1 section-3

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1.
The blade of a power saw is made of

A. Boron steel

B. High speed steel

C. Stainless steel

D. Malleable cast iron

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2.
German silver is an alloy of

A. Silver and some impurities

B. Refined silver

C. Nickel, Copper and zinc

D. Nickel and copper

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3.
Specify the sequence correctly

A. Grain growth, recrystallization, stress relief

B. Stress relief, grain growth, recrystallization

C. Stress relief, recrystallization, grain growth

D. Grain growth, stress relief, recrystallization

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4.
Cementite consist of

A. 13% carbon and 87% ferrite

B. 13% cementite and 87% ferrite

C. 13% ferrite and 87% cementite

D. 6.67% carbon and 93.33% iron

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5.
Preheating is essential in welding

A. Cast iron

B. High speed steel

C. All nonferrous materials

D. All of the above

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6.
Which of the following material has nearly zero coefficient of expansion?

A. Stainless steel

B. High speed steel

C. Invar

D. Heat resisting steel

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7.
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.

A. Cementite

B. Free graphite

C. Both A and B

D. None of these

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8.
When medium carbon steel is heated to coarsening temperature

A. There is no change in grain size

B. The average grain size is a minimum

C. The grain size increases very rapidly

D. The grain size first increases and then decreases very rapidly

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9.
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

A. Sulphur

B. Phosphorus

C. Manganese

D. Silicon

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10.
Recrystallization temperature is one

A. At which crystals first start forming from molten metal when it is cooled

B. At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated

C. At which change of allotropic form takes place

D. At which crystals grow bigger in size

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Engineering Materials MCQ Questions & Answers | Mechanical Engineering

1. The blade of a power saw is made of

Answer & Solution

2. German silver is an alloy of

Answer & Solution

3. Specify the sequence correctly

Answer & Solution

4. Cementite consist of

Answer & Solution

5. Preheating is essential in welding

Answer & Solution

6. Which of the following material has nearly zero coefficient of expansion?

Answer & Solution

7. When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.

Answer & Solution

8. When medium carbon steel is heated to coarsening temperature

Answer & Solution

9. Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Answer & Solution

10. Recrystallization temperature is one

Answer & Solution

Read More Section(Engineering Materials)

1.
The blade of a power saw is made of

2.
German silver is an alloy of

3.
Specify the sequence correctly

4.
Cementite consist of

5.
Preheating is essential in welding

6.
Which of the following material has nearly zero coefficient of expansion?

7.
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.

8.
When medium carbon steel is heated to coarsening temperature

9.
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

10.
Recrystallization temperature is one