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Refrigeration and Air Conditioning

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

None of the listed here
Greater than
Less than
Equal to

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Refrigeration and Air Conditioning
Most air cooled condensers are designed to operate with a temperature difference of

5°C
8°C
22°C
14°C

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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
2 kW
4 kW
1 kW

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Refrigeration and Air Conditioning
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

1.5
0.67
0.6
0.3

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

To the left of saturated liquid line
To the right of saturated liquid line
Between the saturated liquid line and saturated vapour line
None of these

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Bigger
Smaller
Equal
Smaller/bigger depending on capacity

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