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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Freon group of refrigerants are

Toxic
Non-inflammable and toxic
Inflammable
Nontoxic and non-inflammable

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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

More
More/less depending on rating
Less
Same

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

Evaporator
Expansion valve
Compressor
Condenser

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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

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

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Refrigeration and Air Conditioning
The pressure at the inlet of a refrigerant compressor is called

Discharge pressure
Suction pressure
Back pressure
Critical pressure

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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

Freon
Brine
Ammonia
Carbon dioxide

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MORE MCQ ON Refrigeration and Air Conditioning

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