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

Refrigeration and Air Conditioning

In vapour compression cycle using NH3 as refrigerant, initial charge is filled at_________________?

In vapour compression cycle using NH3 as refrigerant, initial charge is filled at_________________?

A. suction of compressor
B. delivery of compressor
C. high pressure side close to receiver
D. low pressure side near receiver
E. anywhere in the cycle

Read More In vapour compression cycle using NH3 as refrigerant, initial charge is filled at_________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During a refrigeration cycle, heat is rejected by the refrigerant in a

Question: During a refrigeration cycle, heat is rejected by the refrigerant in a
[A].

compressor
[B].
condenser
[C].
evaporator
[D].
expansion valve

Answer: Option B

Explanation:

No answer description available for this question.

Read More During a refrigeration cycle, heat is rejected by the refrigerant in a
Refrigeration and Air Conditioning

One of the purposes of sub-cooling the liquid refrigerant is to________________?

One of the purposes of sub-cooling the liquid refrigerant is to________________?

A. reduce compressor overheating
B. reduce compressor discharge temperature
C. increase cooling effect
D. ensure that only liquid and not the vapour enters the expansion (throttling) valve
E. none of the above

Read More One of the purposes of sub-cooling the liquid refrigerant is to________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

Conduction is a process of heat transfer

Question: Conduction is a process of heat transfer
[A].

from one particle of the body to another without the actual motion of the particles
[B].
from one particle of the body to another by the actual motion of the heated particles.
[C].
from a hot body to a cold body, in a straight line, without affecting the intervening medium
[D].
none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Read More Conduction is a process of heat transfer
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During dehumidification process, the relative humidity

Question: During dehumidification process, the relative humidity
[A].

remains constant
[B].
increases
[C].
decreases

Answer: Option C

Explanation:

No answer description available for this question.

Read More During dehumidification process, the relative humidity
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

According to Stefan’s law, the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature.

Question: According to Stefan’s law, the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature.
[A].

Correct
[B].
Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Read More According to Stefan’s law, the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature.

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