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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Is equal to 1
Depends upon the make
Is more than 1
Is less than 1

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

Sulphur sticks
Soap and water
All of these
Halide torch

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Steel
Copper
Aluminium
Brass

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

High boiling point
Non-flammable
Non-explosive
Non-toxic

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Refrigeration and Air Conditioning
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

Ammonia and water
Ammonia and lithium bromide
Water and lithium bromide
Water and water

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Refrigeration and Air Conditioning
A bootstrap air cooling system has

Two heat exchangers
Four heat exchangers
One heat exchanger
Three heat exchangers

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MORE MCQ ON Refrigeration and Air Conditioning

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