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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
In aircraft, air refrigeration Cycle is used because of

High heat transfer rate
Low temperature at high altitudes
Low weight per tonne of refrigeration
Higher coefficient of performance

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Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

1: 1
1: 3
9: 1
1: 9

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Refrigeration and Air Conditioning
In a refrigeration system, the expansion device is connected between the

Condenser and receiver
Receiver and evaporator
Evaporator and compressor
Compressor and condenser

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Dew point temperature
Wet bulb temperature
Dry bulb temperature
Relative humidity

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Refrigeration and Air Conditioning
In vapour compression cycle the condition of refrigerant is superheated vapour

Before passing through the condenser
After passing through the expansion or throttle valve
After passing through the condenser
Before entering the expansion valve

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MORE MCQ ON Refrigeration and Air Conditioning

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