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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Carbon dioxide is

All of the listed here
Odourless
Non-flammable
Colourless

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Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Condenser
Absorber
Evaporator
Condenser, absorber and separator (rectifier)

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Other factors decide C.O.P
O.P remains unaltered
Increases C.O.P
Decreases C.O.P

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Sulphur sticks which on detection gives white smoke
Using reagents
Halide torch which on detection produces greenish flame lighting
Smelling

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Refrigeration and Air Conditioning
During cooling and dehumidification, dry bulb temperature

Increases
None of these
Decreases
Remains constant

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

50
100
20
Zero

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MORE MCQ ON Refrigeration and Air Conditioning

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