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Refrigeration and Air Conditioning

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

Smaller/bigger depending on capacity
Bigger
Smaller
Equal

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Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

Optimum
Low
Any value
High

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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

4 kW
3 kW
2 kW
1 kW

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Refrigeration and Air Conditioning
In chemical dehumidification process,

Dry bulb temperature increases
Dew point temperature decreases
Wet bulb temperature decreases
All of these

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Refrigeration and Air Conditioning
Refrigeration in aeroplanes usually employs the following refrigerant

Air
Freon-22
CO2
Freon-11

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

Equal to
Less than
Greater than
None of the listed here

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MORE MCQ ON Refrigeration and Air Conditioning

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