Which of the, following is not associated with the functioning of a petrol engine ?

Question: Work hardening of a material
[A].

decreases its tensile strength.

[B].

decreases its ductility.

[C].

increases its ductility.

[D].

does not affect its ductility.

Answer: Option B

Explanation:

No answer description available for this question.

Question: ‘Cryogenics’ is concerned with the generation & use of low temperature in the range of
[A].

0°K to 123°K

[B].

0°C to – 123°C

[C].

0°C to – 273°C

[D].

0°K to 273°K

Answer: Option A

Explanation:

No answer description available for this question.

Question: Maximum hardenability of steel depends upon its
[A].

chemical composition

[B].

carbon content

[C].

grain size

[D].

alloying elements content

Answer: Option D

Explanation:

No answer description available for this question.

Question: In a fuel cell, chemical energy is converted into
[A].

electrical energy directly.

[B].

mechanical energy.

[C].

electrical energy and stored therein.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.