Materials and Construction

Question: Heavy duty bearings are usually made of
[A].

white metal

[B].

phosphorous bronze

[C].

monel

[D].

zinc

Answer: Option A

Explanation:

No answer description available for this question.

Question: Percentage of silver in German silver is
[A].

5

[B].

10

[C].

20

[D].

0

Answer: Option D

Explanation:

No answer description available for this question.

Question: Babbit metal used for bearings is a____base alloy.
[A].

tin

[B].

lead

[C].

aluminium

[D].

copper

Answer: Option A

Explanation:

No answer description available for this question.

Question: Hardened steel is softened by
[A].

normalising

[B].

tempering

[C].

annealing

[D].

carburising

Answer: Option B

Explanation:

No answer description available for this question.

Question: Ball bearings are normally made of __________ steel.
[A].

high speed

[B].

high carbon

[C].

chrome

[D].

silicon

Answer: Option C

Explanation:

No answer description available for this question.

Question: Clock pendulums are usually made of __________ steel.
[A].

high speed

[B].

stainless

[C].

heat resisting

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Cast iron is a __________ material.
[A].

brittle

[B].

ductile

[C].

tough

[D].

malleable

Answer: Option A

Explanation:

No answer description available for this question.

Question: A material is able to retain the deformation permanently by virtue of its
[A].

elasticity

[B].

plasticity

[C].

ductility

[D].

malleability

Answer: Option B

Explanation:

No answer description available for this question.

Question: A material is called ‘ductile’, if it can be
[A].

drawn into wires.

[B].

hammered to a thin sheet.

[C].

fractured without deformation.

[D].

made lustrous by heating it.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Manganese in steel affects its
[A].

ductility

[B].

tensile strength

[C].

hardness

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.