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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The relative coefficient of performance is

Actual COP × theoretical COP
Actual COP/theoretical COP
None of these
Theoretical COP/actual COP

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Refrigeration and Air Conditioning
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

None of these
Evaporator
Absorber
Condenser

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

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

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

6
0.2
1.2
5

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

High side float valve
Automatic expansion valve
Low side float valve
Thermostatic expansion valve

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Refrigeration and Air Conditioning
In case of sensible cooling of air, the coil efficiency is given by

1 + B.P.F.
P.F. - 1
1 - B.P.F.
1/ B.P.F.

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MORE MCQ ON Refrigeration and Air Conditioning

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