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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During dehumidification process, _________ remains constant.

Dry bulb temperature
Specific humidity
Relative humidity
Wet bulb temperature

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Refrigeration and Air Conditioning
Vertical lines on pressure-enthalpy chart show constant

Temperature lines
Entropy lines
Total heat lines
Pressure lines

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Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

Less
Same
More/less depending on rating
More

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes gas
Above which liquid becomes vapour
Above which liquid will remain liquid
Above which liquid becomes solid

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

R-12
Carbon dioxide
Sulphur dioxide
Ammonia

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

None of these
Equal to
Less than
Greater than

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MORE MCQ ON Refrigeration and Air Conditioning

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