Engineering Materials - Section 1

Directions to Solve

Engineering Materials - Section 1

1.

The property of a material due to which it breaks with little permanent distortion, is called

A.	brittleness
B.	ductility
C.	malleability
D.	plasticity

Answer: Option A

Explanation:

No answer description available for this question.

2.

The type of space lattice found in gamma-iron is

A.	face centred cubic space lattice
B.	body centred cubic space lattice
C.	close packed hexagonal space lattice
D.	none of these

Answer: Option A

Explanation:

No answer description available for this question.

3.

The cupola is used to manufacture

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

Answer: Option B

Explanation:

No answer description available for this question.

4.

Free carbon in iron makes the metal

A.	soft and gives a coarse grained crystalline structure
B.	soft and gives a fine grained crystalline structure
C.	hard and gives a coarse grained crystalline structure
D.	hard and gives a fine grained crystalline structure

Answer: Option A

Explanation:

No answer description available for this question.

5.

Nodular cast iron is produced by adding __________ to the molten cast iron.

A.	nickel
B.	chromium
C.	copper
D.	magnesium

Answer: Option D

Explanation:

No answer description available for this question.

6.

The lower critical temperature

A.	decreases as the carbon content in steel increases
B.	increases as the carbon content in steel increases
C.	is same for all steels
D.	depends upon the rate of heating

Answer: Option C

Explanation:

No answer description available for this question.

7.

Ferrite and pearlite makes the steel soft and ductile.

A.	Agree
B.	Disagree

Answer: Option A

Explanation:

No answer description available for this question.

8.

In full annealing, the hypo-eutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled

A.	in still air
B.	slowly in the furnace
C.	suddenly in a suitable cooling medium
D.	any one of these

Answer: Option B

Explanation:

No answer description available for this question.

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