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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Expansion valve
Compressor
Evaporator
Condenser

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Gives quiet operation
Cools below 0°C
Gives noisy operation
Requires little power consumption

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

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

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Water at 0°C
Solid and dry ice
Mixture of ice and water under equilibrium conditions
Ice at 4°C

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Refrigeration and Air Conditioning
The evolution of heat of solution takes place in ammonia absorption plant when

Weak solution mixes with strong solution
Ammonia vapour goes into solution
Lithium bromide mixes with ammonia
Ammonia vapour is driven out of solution

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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

43833
4
3
43834

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MORE MCQ ON Refrigeration and Air Conditioning

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