Category: Refrigeration and Air conditioning Mcqs

A.Aeration
B.Deionisation
C.Dehumidification
D.Drying
E.Sensible cooling

A.Reciprocating compressor
B.Centrifugal compressor
C.Rotary compressor
D.Screw compressor

A.More
B.Less
C.Half
D.One forth
E.There is no such relation

A.0.1 ton of cold water
B.Half ton of cold water
C.One tonne of cold water
D.More than one tonne of cold water

A.Dry bulb temperature increases while enthalpy of moist air decreases
B.Dry bulb temperature decreases while enthalpy of moist air increases
C.Both dry bulb temperature as well as enthalpy decrease
D.Both dry bulb temperature as well as enthalpy increase

A.Its size, surface condition and material
B.Kind of refrigerant used
C.Temperature difference between the evaporator and the surrounding air
D.Velocity of turbulence
E.Compressor speed

A.Relative humidity increases
B.Relative humidity decreases
C.Capacity to hold moisture increases
D.There is no effect on moisture holding capacity
E.Dew point occurs

A.Means breakdown in compression
B.Occurs between piston and cylinder heads
C.Occurs when load is too high
D.Means ignition of refrigeration due to high temperature
E.Occurs due to ignition of vapours in compressor crank case

A.Offer no resistance to flow of heat at low temperatures
B.Offer no resistance to flow of electricity at low remperatures
C.Cannot be magnetised at low temperatures
D.Offer no resistance to flow of fluids at low temperatures
E.Can be rubbed with other superconductors without frictional effects at low temperatures

A.Shaded pole type
B.Permanent split capacitor type
C.Capacitor start type
D.Capacitor start and capacitor run type
E.Starting torque is same in all motors