Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

The process of undercooling is generally brought about by
A:
circulating more quantity of cooling water through the condenser
B:
using water colder than the main circulating water
C:
employing a heat exchanger
D:
any one of the above
Answer: D
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The fluids used in electrolux refrigerator are
A:
water and hydrogen
B:
ammonia and hydrogen
C:
ammonia, water and hydrogen
D:
none of these
Answer: C
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During heating and humidification, the final relative humidity of air
A:
is higher than that of the entering air
B:
is lower than that of the entering air
C:
can be lower or higher than that of the entering air
D:
none of the above
Answer: C
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In which of the following refrigeration system, waste heat can be effectively used?
A:
Vapour compression cycle
B:
Vapour absorption cycle
C:
Air refrigeration cycle
D:
none of these
Answer: B
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A refrigerant compressor is used to
A:
raise the pressure of the refrigerant
B:
raise the temperature of the refrigerant
C:
circulate the refrigerant through the refrigerating system
D:
all of the above
Answer: D
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