Refrigeration and Air Conditioning

The moisture in a refrigerant is removed by___________________?

Byadmin January 25, 2019August 16, 2021

The moisture in a refrigerant is removed by___________________?

A. evaporator
B. safety relief valve
C. dehumidifier
D. driers
E. expansion valve

Refrigeration and Air Conditioning

Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of___________________?

Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of___________________?

A. 1 : 1
B. 1 : 9
C. 9 : 1
D. 1 : 3
E. 3 : 1

Read More Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of___________________?
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.
Refrigeration and Air Conditioning

In a refrigeration system, heat absorbed in comparison to heat rejected is_________________?

In a refrigeration system, heat absorbed in comparison to heat rejected is_________________?

A. more
B. less
C. same
D. more for small capacity and less for high capacity
E. less for small capacity and more for high capacity

Read More In a refrigeration system, heat absorbed in comparison to heat rejected is_________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In chemical dehumidification process,

Question: In chemical dehumidification process,
[A].

dew point temperature decreases
[B].
wet bulb temperature decreases
[C].
dry bulb temperature increases
[D].
all of these

Answer: Option D

Explanation:

No answer description available for this question.

Read More In chemical dehumidification process,
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In counter-current flow heat exchangers

Question: In counter-current flow heat exchangers
[A].

both the fluids at inlet are in their hottest state
[B].
both the fluids at inlet are in their coldest state
[C].
both the fluids at exit are in their hottest state
[D].
one fluid is coldest and the other is hottest at inlet

Answer: Option A

Explanation:

No answer description available for this question.

Read More In counter-current flow heat exchangers
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

Question: A human body feels comfortable when the heat produced by the metabolism of human body is equal to the
[A].

heat dissipated to the surroundings
[B].
heat stored in the human body
[C].
sum of (a) and (b)
[D].
difference of (a) and (b)

Answer: Option C

Explanation:

No answer description available for this question.

Read More A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

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