Which of the following alloying elements is present in maximum percentage in high speed steel ?

Question: Aluminium is extracted from
[A].

chalcocite

[B].

bauxite

[C].

galena

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Air-petrol ratio in an automotive petrol engine is around
[A].

14 : 1

[B].

22 : 1

[C].

25 : 1

[D].

4 : 1

Answer: Option A

Explanation:

No answer description available for this question.

Question: Laser is a device to produce
[A].

gamma rays.

[B].

microwaves.

[C].

a beam of white light.

[D].

a beam of coherent light.

Answer: Option D

Explanation:

No answer description available for this question.

Question: A fluid is termed as the Newtonion fluid, when the shear stress is __________ the velocity gradient.
[A].

independent of

[B].

inversely proportional to

[C].

directly proportional to

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the
[A].

low impact strength.

[B].

high flexibility.

[C].

better finish and surface appearance.

[D].

high plastic deformation.

Answer: Option A

Explanation:

No answer description available for this question.