Refrigeration and Air Conditioning

Under-cooling in a refrigeration cycle_________________?

Byadmin January 25, 2019August 16, 2021

Under-cooling in a refrigeration cycle_________________?

A. increases COP
B. decreases COF
C. COP remains unaltered
D. other factors decide COP
E. unperdictable

Refrigeration and Air Conditioning

In vapor compression refrigeration system, refrigerant occurs as liquid between_________________?

In vapor compression refrigeration system, refrigerant occurs as liquid between_________________?

A. condenser and expansion valve
B. compressor and evaporator
C. expansion valve and evaporator
D. compressor and condenser
E. none of the above

Read More In vapor compression refrigeration system, refrigerant occurs as liquid between_________________?
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.

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Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

Air refrigeration cycle is used in

Question: Air refrigeration cycle is used in
[A].

commercial refrigerators
[B].
domestic refrigerators
[C].
air-conditioning
[D].
gas liquefaction

Answer: Option D

Explanation:

No answer description available for this question.

Read More Air refrigeration cycle is used in
Refrigeration and Air Conditioning

Short horizontal lines on pressure-enthalpy chart show__________________?

Short horizontal lines on pressure-enthalpy chart show__________________?

A. constant pressure lines
B. constant temperature lines
C. constant total heat lines
D. constant entropy lines
E. constant volume lines

Read More Short horizontal lines on pressure-enthalpy chart show__________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In a psychrometric chart, specific humidity (moisture content) lines are

Question: In a psychrometric chart, specific humidity (moisture content) lines are
[A].

vertical and uniformly spaced
[B].
horizontal and uniformly spaced
[C].
horizontal and non-uniformly spaced
[D].
curved lines

Answer: Option B

Explanation:

No answer description available for this question.

Read More In a psychrometric chart, specific humidity (moisture content) lines are
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.

Question: In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.
[A].

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

Answer: Option A

Explanation:

No answer description available for this question.

Read More In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.

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