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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The coefficient of performance of Heat Pump is always ___ one.

Greater than
Less than
None of the listed here
Equal to

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

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

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

5
0.2
1.2
6

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Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature
Dew point temperature
Dry bulb temperature
Specific humidity

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Refrigeration and Air Conditioning
The freezing point of R-12 is

-86.6°C
-135.8°C
-95.2°C
-107.7°C

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Refrigeration and Air Conditioning
The value of C.O.P in vapour compression cycle is usually

Equal to unity
Always less than unity
Any one of the above
Always more than unity

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MORE MCQ ON Refrigeration and Air Conditioning

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