For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Refrigeration and Air Conditioning
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Bigger cabinet should be used

Smaller cabinet should be used

Refrigerant with lower evaporation temperature should be used

Perfectly tight vapour seal should be used

Bigger cabinet should be used

Smaller cabinet should be used

Refrigerant with lower evaporation temperature should be used

Perfectly tight vapour seal should be used

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Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Bell Coleman

Carnot

Stirling

Ericson

Bell Coleman

Carnot

Stirling

Ericson

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Refrigeration and Air Conditioning
The relative coefficient of performance is equal to

(Theoretical C.O.P.)/ (Actual C.O.P.)

None of these

(Actual C.O.P.) × (Theoretical C.O.P.)

(Actual C.O.P.) /(Theoretical C.O.P.)

(Theoretical C.O.P.)/ (Actual C.O.P.)

None of these

(Actual C.O.P.) × (Theoretical C.O.P.)

(Actual C.O.P.) /(Theoretical C.O.P.)

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Refrigeration and Air Conditioning
The superheating in a refrigeration cycle

None of these

Decreases C.O.P.

Increases C.O.P.

Does not alter C.O.P.

None of these

Decreases C.O.P.

Increases C.O.P.

Does not alter C.O.P.

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Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

(T₂ - T₁)/T₁

T₂/(T₂ - T₁)

(T₁ - T₂)/T₁

T₁/(T₂ - T₁)

(T₂ - T₁)/T₁

T₂/(T₂ - T₁)

(T₁ - T₂)/T₁

T₁/(T₂ - T₁)

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Refrigeration and Air Conditioning
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

Ammonia and water

Water and lithium bromide

Ammonia and lithium bromide

Water and water

Ammonia and water

Water and lithium bromide

Ammonia and lithium bromide

Water and water

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Refrigeration and Air Conditioning Which of the following cycles uses air as the refrigerant?

Refrigeration and Air Conditioning The relative coefficient of performance is equal to

Refrigeration and Air Conditioning The superheating in a refrigeration cycle

Refrigeration and Air Conditioning The C.O.P. of a heat pump working on a reversed Carnot cycle is

Refrigeration and Air Conditioning In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

Refrigeration and Air Conditioning
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Refrigeration and Air Conditioning
The relative coefficient of performance is equal to

Refrigeration and Air Conditioning
The superheating in a refrigeration cycle

Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

Refrigeration and Air Conditioning
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively