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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 + (1/C.O.P)
1 - (1/C.O.P)
1 - C.O.P.
1 + C.O.P

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using Freon is detected by

Soap and water
All of these
Halide torch
Sulphur sticks

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant is dry saturated vapour

After leaving the compressor
Before entering the condenser
After leaving the condenser
Before entering the compressor

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Refrigeration and Air Conditioning
Bell Coleman cycle is a

Reversed Carnot cycle
Reversed Otto cycle
Reversed Rankine cycle
Reversed Joule cycle

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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
Superheating in a refrigeration cycle

Decreases C.O.P
O.P remains unaltered
Increases C.O.P
Other factors decide C.O.P

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MORE MCQ ON Refrigeration and Air Conditioning

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