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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

43834
3
43833
4

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Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

18.6 kW
7.44 kW
1.86 kW
3.72 kW

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

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

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Refrigeration and Air Conditioning
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to

Collect vapours
Superheat the vapour
Detect liquid in vapour
Collect liquid refrigerant and prevent it from going to compressor

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Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

Same
More/less depending on rating
Less
More

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Refrigeration and Air Conditioning
An evaporator is also known as

Chilling coil
All of these
Cooling coil
Freezing coil

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