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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

6
1.2
0.2
5

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Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

All of these
Ammonia
R-12
CO?

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

noisy operation
quiet operation
cooling below 0°C
very little power consumption

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Refrigeration and Air Conditioning
The specific humidity during heating and humidification process.

Increases
None of these
Remains constant
Decreases

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Refrigeration and Air Conditioning
The formation of frost on cooling coils in a refrigerator

Increases power consumption
Reduces power consumption
Improves C.O.P. of the system
Increases heat transfer

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

0.1 to 0.3 TR
1 to 3 TR
5 to 7 TR
3 to 5 TR

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MORE MCQ ON Refrigeration and Air Conditioning

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