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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during heating and humidification process.

Decreases
Remains constant
Increases
None of these

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Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.25
0.75
0.1
0.5

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Refrigeration and Air Conditioning
Wet bulb temperature is the temperature of air recorded by a thermometer, when

None of these
Its bulb is surrounded by a wet cloth exposed to the air
It is not affected by the moisture present in the air
The moisture present in it begins to condense

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Refrigeration and Air Conditioning
The cooling system used for supersonic aircrafts and rockets is

Bootstrap air cooling system
Simple air cooling system
Regenerative air cooling system
Reduced ambient air cooling system

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Other factors decide C.O.P
O.P remains unaltered
Decreases C.O.P
Increases C.O.P

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Automatic expansion valve
High side float valve
Thermostatic expansion valve
Low side float valve

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MORE MCQ ON Refrigeration and Air Conditioning

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