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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant temperature lines
Constant entropy lines
Constant total heat lines
Constant pressure lines

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Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when it is not affected by the moisture present in the air, is called

None of these
Wet bulb temperature
Dew point temperature
Dry bulb temperature

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

Aluminium
Copper
Brass
Steel

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-135.8°C
-56.6°C
-77.7°C
-75.2°C

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

Carbon dioxide
Sulphur dioxide
R-12
Ammonia

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Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

Same
Less
More for small capacity and less for high capacity
More

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MORE MCQ ON Refrigeration and Air Conditioning

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