Mechanical Engineering - Engineering Materials

46. 

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. Let us discuss.

47. 

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. Let us discuss.

48. 

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. Let us discuss.

49. 

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. Let us discuss.

50. 

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. Let us discuss.

« Prev   1 2 3 4 5 6 7 8 9 10