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Refrigeration and Air Conditioning

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

Halide torch
Soap and water
All of these
Sulphur sticks

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Refrigeration and Air Conditioning
Moisture in Freon refrigeration system causes

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

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Compressor
Condenser
Expansion valve
Evaporator

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Refrigeration and Air Conditioning
The index which correlates the combined effects of air temperature, relative humidity and air velocity on the human body, is known as

Dew point temperature
Mean radiant temperature
None of the listed here
Effective temperature

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

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

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Refrigeration and Air Conditioning
A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Brine
Ammonia
Carbon dioxide
Freon

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MORE MCQ ON Refrigeration and Air Conditioning

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