Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

41.
In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature
which lies between the dry bulb and wet bulb temperatures of the incoming stream
which lies between the wet bulb and dew point temperatures of the incoming stream
which is lower than the dew point temperature of the incoming stream
of adiabatic saturation of incoming stream
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
The coefficient of performance of vapour compression refrigeration system is quite __________ as compared to air refrigeration system.
low
high
Answer: Option
Explanation:
No answer description is available. Let's discuss.

43.
In order to collect liquid refrigerant and to prevent it from going to a __________ , a device known as accumulator is used at the suction of compressor.
compressor
condenser
expansion valve
evaporator
Answer: Option
Explanation:
No answer description is available. Let's discuss.

44.
Which of the following refrigerant has the lowest boiling point?
Ammonia
Carbon dioxide
Sulphur dioxide
R-12
Answer: Option
Explanation:
No answer description is available. Let's discuss.

45.
During sensible cooling of air, the relative humidity increases.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.