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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

3 kW
1 kW
2 kW
4 kW

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Refrigeration and Air Conditioning
The advantage of dry compression is that

It permits complete evaporation in the evaporator
It results in high volumetric and mechanical efficiency
All of these
It permits higher speeds to be used

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Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

Of freezing zone
At which refrigerant gas becomes liquid
Of cooling medium
Of evaporator

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

Other factors decide C.O.P
Decreases C.O.P
Increases C.O.P
O.P remains unaltered

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Refrigeration and Air Conditioning
During adiabatic saturation process on unsaturated air ___ remains constant.

Dew point temperature
Wet bulb temperature
Relative humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
Air refrigerator works on

None of these
Bell Coleman cycle
Both (A) and (B)
Reversed Carnot cycle

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MORE MCQ ON Refrigeration and Air Conditioning

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