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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Lower than
Higher than
None of these
Same as

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

Zero
As low as possible (3 to 11°C)
Any value
High, of the order of 25°

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

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

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Refrigeration and Air Conditioning
For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is

Screw
Reciprocating
Rotating
Centrifugal

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Refrigeration and Air Conditioning
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

Absolute humidity
Relative humidity
Degree of saturation
Humidity ratio

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Refrigeration and Air Conditioning
The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

More
Less
Equally
Unpredictable

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MORE MCQ ON Refrigeration and Air Conditioning

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