The COP of a domestic refrigerator___________________?

Byadmin January 25, 2019August 16, 2021

The COP of a domestic refrigerator___________________?

A. is less than 1
B. is more than 1
C. is equal to 1
D. depends upon the make
E. depends upon the weather conditions

Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During humidification process, __________ increases.

Question: During humidification process, __________ increases.
[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.

Read More During humidification process, __________ increases.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

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

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.

Read More 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
Refrigeration and Air Conditioning

If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?

If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?

A. 0.2
B. 1.2
C. 5
D. 6
E. 10

Read More If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?
Refrigeration and Air Conditioning

Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system ?

Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system ?

A. strong solution to weak solution
B. weak solution to strong solution
C. strong solution to ammonia vapour
D. ammonia vapour to weak solution
E. ammonia vapour to strong solution

Read More Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system ?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A refrigerant with the highest critical pressure is

Question: A refrigerant with the highest critical pressure is
[A].

R-11
[B].
R-12
[C].
R-22
[D].
Ammonia

Answer: Option D

Explanation:

No answer description available for this question.

Read More A refrigerant with the highest critical pressure is
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

If the evaporator temperature is kept constant, the coefficient of performance of a refrigeration cycle __________ with the increase in condenser temperature.

Question: If the evaporator temperature is kept constant, the coefficient of performance of a refrigeration cycle __________ with the increase in condenser temperature.
[A].

increases
[B].
decreases

Answer: Option B

Explanation:

No answer description available for this question.

Read More If the evaporator temperature is kept constant, the coefficient of performance of a refrigeration cycle __________ with the increase in condenser temperature.

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