Mechanical Engineering - Engineering Materials

1. 

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

Answer: Option C

Explanation:

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2. 

The hardness of steel depends upon the

A. amount of cementite it contains
B. amount of carbon it contains
C. contents of alloying elements
D. method of manufacture of steel

Answer: Option B

Explanation:

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3. 

Cartidge brass can be

A. cold rolled into sheets
B. drawn into wires
C. formed into tube
D. any one of these

Answer: Option D

Explanation:

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4. 

Which of the following statement is correct?

A. The product produced by blastfurnace is called cast iron.
B. The pig iron is the name given to the product produced by cupola.
C. The cast iron has high tensile strength.
D. The chilled cast iron has no graphite.

Answer: Option D

Explanation:

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5. 

Blast furnace is used to produce

A. pig iron
B. cast iron
C. wrought iron
D. steel

Answer: Option A

Explanation:

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