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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

4
3
43834
43833

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

Sulphur sticks
Halide torch
All of these
Soap and water

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

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Refrigeration and Air Conditioning
Moisture in Freon refrigeration system causes

Ineffective refrigeration
Freezing automatic regulating valve
Corrosion of whole system
High power consumption

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Refrigeration and Air Conditioning
In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at

Suction of compressor
High pressure side close to receiver
Delivery of compressor
Low pressure side near receiver

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Refrigeration and Air Conditioning
The central air conditioning system has ___________ overall efficiency as compared to individual systems.

Higher
Same
Lower
None of these

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MORE MCQ ON Refrigeration and Air Conditioning

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