For preparation of porous bearings by powder metallurgy, preferred particle shape is___________________?

Question: With decrease in the grain size of a material, its creep resistance
[A].

increases.

[B].

decreases.

[C].

remains constant.

[D].

either (a) or (b) ; depends on the material.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Auto collimator is used to check
[A].

flatness

[B].

angle

[C].

rotor balancing

[D].

roughness

Answer: Option B

Explanation:

No answer description available for this question.

Question: During sensible cooling of air, its wet bulb temperature
[A].

decreases but dew point remains constant.

[B].

increases but dew point remains constant.

[C].

increases & the dew point decreases.

[D].

decreases & the dew point increases.

Answer: Option B

Explanation:

No answer description available for this question.