Material Science And Metallurgy (3131904) MCQs

MCQs of Introduction to Material Science and Metallurgy

Showing 21 to 30 out of 31 Questions
1 2 3 4
21.

Shock resisting steels should have

(a)

Low wear resistance
(b)

Low hardness
(c)

Low tensile strength
(d)

Toughness
Answer:

Option (d)

22.

The elastic stress strain behaviour of rubber is

(a)

Linear
(b)

Non-linear
(c)

Plastic
(d)

no fixed relationship
Answer:

Option (b)

23.

The rollers of a cycle chain are subjected to following type of stress

(a)

Compressive
(b)

Tensile
(c)

Bending
(d)

Fatigue
Answer:

Option (d)

24.

Slow plastic deformation of metals under a constant stress is known as

(a)

Creep
(b)

Fatigue
(c)

Endurance
(d)

Plastic deformation
Answer:

Option (a)

25.

The unique property of cast iron is, its high

(a)

Malleability
(b)

Ductility
(c)

Surface finish
(d)

Damping characteristics
Answer:

Option (d)

26.

Hardenability of stell

(a)

Is the depth of penetration obtained by Vickers test
(b)

Is the abilty of steel to resist abration, wear and penetration
(c)

Is the property which determines the depth of the hardened zone induced by quenching
(d)

Is achieved throughout its full depth, when the actual cooling rate equals the critical cooling rate
Answer:

Option (c)

27.

The hardest known material is

(a)

Ceramic
(b)

High speed steel
(c)

Diamond
(d)

Cemented carbide
Answer:

Option (c)

28.

Which of the following is the hardest material

(a)

Hardened steel
(b)

Boron carbide
(c)

Alloy steel
(d)

Silicon carbide
Answer:

Option (b)

29.

Which of the following has maximum malleability

(a)

Lead
(b)

Brass
(c)

Wrought iron
(d)

Copper
Answer:

Option (a)

30.

Selection of a material for a particular use is based on following consideration

(a)

Service requirements
(b)

Fabrication characterstic
(c)

Cost
(d)

All of the above
Answer:

Option (d)

Showing 21 to 30 out of 31 Questions
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