Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

26. 

Fouling factor is used

A. in heat exchanger design as a safety factor
B. in case of Newtonian fluids
C. when a liquid exchanges heat with a gas
D. none of the above

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

27. 

The natural convection air cooled condensers are used in

A. domestic refrigerators
B. water coolers
C. room air conditioners
D. all of these

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

28. 

The process, generally used in winter air-conditioning to warm and humidity the air, is called

A. humidification.
B. dehumidification
C. heating and humidification
D. cooling and dehumidification

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

29. 

At 100% relative humidity, wet bulb temperature, dry bulb temperature, dew point temperature and saturation temperature are equal.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

30. 

Bell-Coleman cycle is a

A. reversed Carnot cycle
B. reversed Otto cycle
C. reversed Joule cycle
D. reversed Rankine cycle

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.