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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Wet bulb temperature
Relative humidity
Dry bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Maximum work input
Very little work input
Zero work input
Nearly same work input as for vapour compression cycle

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Refrigeration and Air Conditioning
The thermostatic expansion valve is used in ________ type of evaporators.

Dry
DX coil
None of these
Flooded

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

Its bulb is surrounded by a wet cloth exposed to the air
None of these
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
The value of C.O.P in vapour compression cycle is usually

Always more than unity
Any one of the above
Equal to unity
Always less than unity

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MORE MCQ ON Refrigeration and Air Conditioning

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