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
Category: Refrigeration and Air conditioning Mcqs
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
The condition of refrigerant before and after the condenser in a vapour compression cycle is
A.Dry saturated, saturated liquid
B.Dry saturated, wet vapour
C.Dry saturated, dry saturated
D.Wet vapour, wet vapour
E.Liquid, liquid
Defrosting of evaporators is done because
A.Frosting is undersirable
B.Frosting increases refrigerating effect
C.Frosting retards heat flow
D.Frosting obstructs flow of refrigerant
E.Frosting may cause damage to equipment
The bulk of tubes at the back of the domestic refrigerator are
A.Condenser tubes
B.Evaporator tubes
C.Refrigerant cooling tubes
D.Capillary tubes
E.Throttling device
Refrigerant R-40 is
A.Air
B.Methyl chloride
C.Glycol
D.Brine
E.None of the above
Which of the following symptoms will indicate under charging of a vapour compressor refrigeration cycle?
A.Compressor runs continuously
B.Frost on suction line
C.Low suction pressure
D.Low head pressure
E.All of the above
