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Refrigeration and Air Conditioning

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

Steel
Brass
Copper
Aluminium

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Thermostatic expansion valve
Low side float valve
Automatic expansion valve
High side float valve

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Using reagents
Halide torch which on detection produces greenish flame lighting
Smelling
Sulphur sticks which on detection gives white smoke

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Refrigeration and Air Conditioning
The condition of refrigerant after passing through the condenser in a vapour compression system is

Superheated vapour
Saturated liquid
Wet vapour
Dry saturated vapour

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Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Room air conditioners
Domestic refrigerators
All of these
Water coolers

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Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Brass
Aluminium
Copper
Steel

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MORE MCQ ON Refrigeration and Air Conditioning

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