Stresses encountered in the metal forming processes are less than the _____________ of the material?

Question: Carburettor in a spark ignition engine is used to
[A].

mix air-fuel in the desired ratio.

[B].

maintain a constant speed at varying loads.

[C].

adjust the stroke length.

[D].

increase the compression ratio.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
[A].

cheap electricity is available.

[B].

the precious metal content of copper is high.

[C].

there is a demand for ultrapure (99.99%) electrolytic copper.

[D].

all (a), (b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: A material is capable of resisting softening at high temperature, because of its property termed as
[A].

hot temper

[B].

hot hardness

[C].

fatigue

[D].

creep

Answer: Option B

Explanation:

No answer description available for this question.

Question: Knocking tendency in a petrol engine decreases with increasing
[A].

supercharging

[B].

compression ratio

[C].

wall temperature

[D].

engine speed

Answer: Option D

Explanation:

No answer description available for this question.

Question: Grey cast iron (used for making underground water pipes and manhole covers) as compared to steel has higher
[A].

ductility

[B].

impact strength

[C].

machinability

[D].

melting point

Answer: Option C

Explanation:

No answer description available for this question.