Anhydrous substance is
A.Free of hydrogen
B.Free of hydrogen and other chemicals containing hydrogen
C.Free of water especially water of crystallization
D.Free of humidity
E.Dry substance
Category: Refrigeration and Air conditioning Mcqs
The coefficient of performance of a domestic refrigerator as compared to that of an air conditioner is gererally
A.More
B.Same
C.Less
D.Air conditioner performance depends on whether conditions
E.Cannot be compared
In a refrigeration cycle the heat is rejected by refrigerant at
A.Evaporator
B.Condenser
C.Expansion valve
D.Compressor
E.All of the above
In a small vapour compression cycle using capillary tubing for expansion, if suddenly uncondensed vapours enter the tubing, the result will be
A.Improved refrigerating capacity
B.Loss in refrigerating capacity
C.Supply of superheated vapour to compressor
D.Choking of drier
E.All of the above
In a psychrometric chart horizontal line indicate
A.Dry bulb temperature
B.Wet bulb temperature
C.Dew point temperature
D.Percentage humidity
E.Relative humidity
The condension of moisture contained in air will take place at
A.Dry bulb temperature
B.Wet bulb temperature
C.Any where between dry bulb temperature and wet bulb temperature
D.Saturation temperature
E.Dew point temperature
If a room has bad ammonia leaks
A.Before entering the room fans should be put on
B.Lights should be switched off
C.One should wait for sometime
D.Gas mask should be put on
E.No specific precautions are needed
On a psychrometric chart sensible heating or cooling is represented by
A.A horizontal line
B.A vertical line
C.Inclined line
D.Curved line
E.None of the above
A plate of vane used to direct or control movement of fluid or air within the confined area is known as
A.Baffle
B.Bellows
C.Regulator
D.Diffuser
The moisture in a refrigeration system is removed by
A.Driers
B.Dehumidifiers
C.Evaporators
D.Coolers
E.None of the above
