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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The wet bulb depression indicates _________ humidity of the air.

None of these
Relative
Absolute
Specific

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Refrigeration and Air Conditioning
When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by

Operating the machine at lower speeds
Lowering the higher temperature
Operating the machine at higher speeds
Raising the higher temperature

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

Two cooling turbines and two heat exchangers
Two cooling turbines and one heat exchanger
One cooling turbine and one heat exchanger
One cooling turbine and two heat exchangers

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Refrigeration and Air Conditioning
During a refrigeration cycle, heat is rejected by the refrigerant in a

Compressor
Condenser
Expansion valve
Evaporator

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

Non-toxic
Non-flammable
Non-explosive
High boiling point

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid

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

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MORE MCQ ON Refrigeration and Air Conditioning

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