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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In larger industrial and commercial reciprocating compression systems, refrigerant widely used is

R-12
Ammonia
Sulphur dioxide
Carbon dioxide

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Refrigeration and Air Conditioning
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the

Expansion valve to the evaporator
Condenser to the expansion valve
Evaporator to the thermostat
Condenser to the evaporator

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Refrigeration and Air Conditioning
The temperature of ammonia after compression in a vapour compression system is

None of these
20 to 50°C
70 to 110°C
50 to 70°C

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Refrigeration and Air Conditioning
Carbon dioxide is

Colourless
Non-flammable
All of the listed here
Odourless

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Refrigeration and Air Conditioning
In a refrigeration system, the expansion device is connected between the

Receiver and evaporator
Compressor and condenser
Evaporator and compressor
Condenser and receiver

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

50
Zero
20
100

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MORE MCQ ON Refrigeration and Air Conditioning

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