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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During cooling and dehumidification, dry bulb temperature

None of these
Increases
Remains constant
Decreases

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Refrigeration and Air Conditioning
The thermostatic expansion valve operates on the changes in the

Pressure in the evaporator
None of these
Temperature of the evaporator
Degree of superheat at exit from the evaporator

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Refrigeration and Air Conditioning
A refrigerant compressor is used to

Raise the pressure of the refrigerant
All of these
Circulate the refrigerant through the refrigerating system
Raise the temperature of the refrigerant

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 - (1/C.O.P)
1 - C.O.P.
1 + C.O.P
1 + (1/C.O.P)

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Superheated vapour region
Sub-cooled liquid region
None of the listed here
Wet vapour region

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Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

Same
More
More for small capacity and less for high capacity
Less

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MORE MCQ ON Refrigeration and Air Conditioning

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