Category: Refrigeration and Air conditioning Mcqs

A.solid carbon dioxide
B.ice kept below 0?C to avoid melting
C.solid hydrogen
D.ice kept out of contact of other liquids

A.Compressor
B.Expansion valve
C.Condenser
D.Receiver
E.Evaporator

A.Halide torch test
B.Sulphur candle test
C.Soap and water test
D.Any of above
E.None of the above

A.? 15?C to – 40?C
B.0?C to – 15?C
C.40?C to 0?C
D.50?C to 40?C
E.70?C to – 110?C

A.Increases heat transfer
B.Improves COP of the system
C.Reduces power consumption
D.Reduces evaporator temperature
E.Acts as an insulation, increasing power consumption

A.All gases exert partial pressures only
B.All gases or mixture of gases exent partial pressures
C.All gases or mixture of gases in a container will exert their own pressure on the container entirely indipendent of the others
D.Total pressure exerted by a mixture of gases or vapours is equal to the pressure exerted by individual gases or vapours
E.None of the above

A.Non-toxic
B.Non-inflammable
C.Colourless
D.Pungent odour
E.All of the above

A.Power failure
B.Low voltage
C.Burnt motor
D.Fuse blown
E.Any of the above

A.Adiabatic process
B.Isothermal process
C.Polytropic process
D.Constant pressure process
E.Polytropic process

A.Absolute humidity
B.Degree of saturation and degree of reaction
C.Relative humidity
D.Any of the above
E.None of the above