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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Piston type reciprocating
Miniature sealed unit
Centrifugal
Axial

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Refrigeration and Air Conditioning
The boiling point of ________ is 10.5°C.

Sulphur dioxide
Ammonia
R-12
Carbon dioxide

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Refrigeration and Air Conditioning
Which of the following refrigerant is highly toxic and flammable?

R-12
Ammonia
Carbon dioxide
Sulphur dioxide

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

very little power consumption
cooling below 0°C
noisy operation
quiet operation

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Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Condensation
Compression
Evaporation
Expansion

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Refrigeration and Air Conditioning
An evaporator is also known as

Cooling coil
Freezing coil
Chilling coil
All of these

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