When air is adiabatically saturated, the temperature attained is known as
A.Dry bulb temp
B.Wet bulb temp
C.Dew point temp
D.Critical temp
E.Adiabatically sturated temp
Category: Refrigeration and Air conditioning Mcqs
For a sensible heating the air is passed over a heating coil which may be
A.Heated by electric resistance
B.Heated by passing hot water through the coil
C.Heated by passing steam through the coil
D.Heated by direct solar radiations
E.Heated by any of the above methods
Dew points temperature is an indication of
A.Moisture content of air
B.Dryness of air
C.Lowest temperature where air and water vapour start separating
D.Condition air
E.Any of the above
In case of completely dry air
A.Total heat is same as latent heat
B.Total heat is same as sensible heat
C.Total heat is sum of sensible heat and latent heat
D.Total heat is sum of sensible heat required for all individual constituents
E.None of the above
If the condensation temperature of a refrigerant is 25?C which type of condenser cannot be used?
A.Air cooled condenser
B.Water cooled condenser
C.Brine circulation condenser
D.Ice cooled condenser
Under increased atmospheric pressure (as compared to the standard conditions) the steam will condense at
A.More than 100?C
B.100?C
C.Less than 100?C
D.Has nothing to do with pressure
E.Depends on other conditions
A critical temperature is the temperature
A.Below which gas is always liquefied
B.Above which a gas will never be liquefied
C.Below which a gas does not obey gas laws
D.Above which a gas may explode
E.None of the above
In order to ensure leak proof mechanical links, the end of copper tubing in refrigeration cycle is
A.Flared
B.Brazed
C.Soldered
D.Press-fitted
E.(C) and (D) together
In vapour compression cycle the highest temperature of the refrigerant during the cycle occurs
A.After expansion valve
B.After evaporator
C.After condenser
D.After compression
E.None of the above
The critical pressure of a liquid is the pressure
A.Below which a liquid will always be in vapour form
B.Above which a liquid will remain a liquid
C.Above which a liquid will always turn into a vapour
D.Above which a liquid will explode
E.None of the above
