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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

3
4
43834
43833

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Carnot
Rankine
Reversed Rankine
Reversed Carnot

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Refrigeration and Air Conditioning
A refrigerant compressor is used to

Raise the pressure of the refrigerant
All of these
Circulate the refrigerant through the refrigerating system
Raise the temperature of the refrigerant

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Refrigeration and Air Conditioning
Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle?

0.25
0.8
1.25
0.5

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Refrigeration and Air Conditioning
Moisture should be removed from refrigerants to avoid

Restriction to refrigerant flow
Freezing at the expansion valve
All of these
Corrosion of steel plates

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

50
100
20
Zero

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MORE MCQ ON Refrigeration and Air Conditioning

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