Refrigeration in aeroplanes usually employs the following refrigerant___________________?

Question: During heating and dehumidification process, dry bulb temperature
[A].

remains constant

[B].

increases

[C].

decreases

Answer: Option B

Explanation:

No answer description available for this question.

Question: During sensible heating of air __________ decreases.
[A].

wet bulb temperature

[B].

relative humidity

[C].

dry bulb temperature

[D].

specific humidity

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following refrigerant is highly toxic and flammable?
[A].

Ammonia

[B].

Carbon dioxide

[C].

Sulphur dioxide

[D].

R-12

Answer: Option A

Explanation:

No answer description available for this question.

Question: In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

Question: A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100° C and leaves at 60° C. A cold fluid enters the heat exchanger at 40° C. The mean temperature difference between the two fluids is
[A].

20°C

[B].

40°C

[C].

60°C

[D].

66.7°C

Answer: Option A

Explanation:

No answer description available for this question.