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Refrigeration and Air Conditioning

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

-95.2°C
-86.6°C
-107.7°C
-135.8°C

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

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

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Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

1
2.15
1.25
5.12

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

There is no such consideration
Less than 2 kg
More than 10 kg
More than or equal to 3.65 kg

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Refrigeration and Air Conditioning
The boiling point of ammonia is

-33.3°C
-10.5°C
-77.7°C
-30°C

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Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

Frosting evaporator
Non-frosting evaporator
None of these
Defrosting evaporator

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MORE MCQ ON Refrigeration and Air Conditioning

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