Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are _______________ respectively ?

Question: Dislocation cross-slip is difficult in those materials, which have
[A].

large number of slip systems.

[B].

high work hardening rate.

[C].

coarse grain size.

[D].

low stacking fault energy.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Which of the following pair is correctly matched?
[A].

Heat transfer: Thermal diffusivity.

[B].

Mass transfer: Diffusion co-efficient.

[C].

Momentum transfer: Kinematic viscosity.

[D].

all ‘a’, ‘b’ & ‘c’ are correctly matched.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air.
[A].

wet bulb

[B].

dry bulb

[C].

saturation

[D].

dew point

Answer: Option A

Explanation:

No answer description available for this question.

Question: Addition of __________ to steel does not impart hardness.
[A].

nickel

[B].

copper

[C].

chromium

[D].

silicon

Answer: Option B

Explanation:

No answer description available for this question.

Question: In case of simple harmonic motion, displacement is proportional to the
[A].

velocity

[B].

acceleration

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option B

Explanation:

No answer description available for this question.