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Refrigeration and Air Conditioning

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

Increases
Decreases
None of these
Remains constant

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Refrigeration and Air Conditioning
Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle?

0.8
0.5
1.25
0.25

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

Dew point temperature
Relative humidity
Wet bulb temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Carbon dioxide
Ammonia
Freon
Brine

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Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Piston type reciprocating
Axial
Centrifugal
Miniature sealed unit

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Refrigeration and Air Conditioning
Carbon dioxide is

Non-flammable
All of the listed here
Colourless
Odourless

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MORE MCQ ON Refrigeration and Air Conditioning

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