WorksheetsRefrigeration and air conditioning CO5
Total questions: 10
Worksheet time: 10mins
Which of the following can be considered as a refrigeration cycle?
Carnot cycle
Reversed Carnot cycle
Reversed heat engine cycle
Air standard cycle
The ideal process occurring in the expansion device of vapor compression refrigeration cycle is ____.
adiabatic heat rejection
adiabatic throttling
constant pressure throttling
all the above
Which of the following device produces the refrigerating effect?
compressor
condenser
expansion valve
evaporator
The enthalpy of the refrigerant after ideal expansion is equal to _____.
hf at condenser pressure
hg at condenser pressure
hf at evaporator pressure
hg at evaporator pressure
Which of the following fluid is not used as refrigerant?
Ammonia
Freon
Sulphur dioxide
None of the above
Vapour absorption refrigeration cycle uses _____ instead of _____.
absorber, compressor
generator, compressor
heat exchanger, compressor
absorber-generator assembly, compressor
(a) is the study of the properties of air-water vapor mixture.
The temperature at which water vapor in the air starts to condense is called____.
Condensation temperature
Saturation temperature
dew point temperature
all the above
The mass of water vapor per unit mass of dry air in a mixture of air-water vapor is called
Specific humidity
Relative humidity
Humidity ratio
all the above
On a day when the difference between the dry bulb temperature and the wet bulb temperature is large, then the amount of moisture present in air is _____.
zero
less
more
none of the above
