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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be

Positive
Zero
None of the listed here
Negative

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Refrigeration and Air Conditioning
A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

Sum of (A) and (B)
Heat dissipated to the surroundings
Heat stored in the human body
Difference of (A) and (B)

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Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Heating and humidification
Cooling and dehumidification
Humidification
Dehumidification

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Refrigeration and Air Conditioning
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

Saturated air
Dry air
Moist air
Specific humidity

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

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

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Refrigeration and Air Conditioning
The formation of frost on cooling coils in a refrigerator

Reduces power consumption
Increases power consumption
Improves C.O.P. of the system
Increases heat transfer

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MORE MCQ ON Refrigeration and Air Conditioning

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