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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The freezing point of R-12 is

-86.6°C
-135.8°C
-95.2°C
-107.7°C

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Refrigeration and Air Conditioning
Most thermostatic expansion valves are set for a superheat of

15°C
10°C
20°C
5°C

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Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

All of these
Ammonia
R-12
CO?

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

80 kcal/ hr
80 kcal/ min
50 kcal/ hr
50 kcal/ min

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Superheated vapour region
Wet vapour region
Sub-cooled liquid region
None of the listed here

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Refrigeration and Air Conditioning
Air conditioning means

Dehumidifying
All of these
Cooling
Heating

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MORE MCQ ON Refrigeration and Air Conditioning

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