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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

More than
Equal to
Less than
None of these

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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
Cooling water is required for following equipment in ammonia absorption plant

Evaporator
Condenser, absorber and separator (rectifier)
Condenser
Absorber

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

Pressure lines
Entropy lines
Temperature lines
Total heat lines

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Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

26°C DBT and 50% RH
26°C DBT and 60% RH
20°C DBT and 60% RH
20°C DBT and 50% RH

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

80 kcal/ hr
50 kcal/ min
80 kcal/ min
50 kcal/ hr

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MORE MCQ ON Refrigeration and Air Conditioning

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