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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The dehumidification process, on the psychrometric chart, is shown by

Inclined line
Horizontal line
Vertical line
Curved line

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Refrigeration and Air Conditioning
The humidity ratio or specific humidity is the mass of water vapour present in

1 kg of dry air
1 m3 of dry air
1 m3 of wet air
1 kg of wet air

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

Equal
Smaller
Bigger
Smaller/bigger depending on capacity

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Refrigeration and Air Conditioning
If a gas is to be liquefied, its temperature must be

Increased to a value above its critical temperature
Reduced to a value below its critical temperature
Equal to critical temperature
None of these

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Condenser
Compressor
Evaporator
Expansion valve

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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: 3
1: 1
1: 9
9: 1

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MORE MCQ ON Refrigeration and Air Conditioning

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