Which reciprocating compressor is usually used in domestic refrigerators?
A.Open type
B.Semi-sealed type
C.Hermetically sealed type
D.Any of the above
E.None of the above
Category: Refrigeration and Air conditioning Mcqs
A cooling tower in a refrigeration system
A.Removes heat from refrigerant
B.Removes heat from brine
C.Removes heat from lubricating oil
D.Removes heat from hot water coming out of condenser
E.None of the above
Freon type (halocarbons) refrigerants are
A.Poisonous
B.Irritating
C.Non-poisonous
D.Coloured
E.Have peculiar odour
Which of the following connections is usually not provided in a hermetically sealed type compressors?
A.Refrigerant inlet
B.Refrigerant outlet
C.Lubricating oil charging connection
D.Refrigerant charging connection
E.There is no connection provided
If the discharge pressure of a refrigeration compressor is too high it shows
A.Too little or to warm condenser water
B.Lack of refrigerant
C.Excessive cooling load
D.Lack of compressor lubrication
E.Any of the above
In case air is cooled by a process in which the humidity ratio of air does not change, the process is known as
A.Humidification
B.Dehumidification
C.Ventilation
D.Chilling
E.Sensible cooling
Which of the following are synonyms?
A.Humidity ratio and specific humidity
B.Degree of saturation and degree of reaction
C.Sensible cooling and dehumidification
D.Relative humidity and specific humidity
E.Dehumidification
For better performance a desert cooler
A.Should be placed inside the room
B.Should be placed outside
C.Should be mounted on window
D.Should be placed at the roof level
E.None of the above
Cooling towers are used for cooling water
A.To be injected in circulating air
B.To be used for humidification
C.To be used for filtration of air
D.To be used for cooling the compressor
E.To be used for cooling the building
The function of desuperheating coil in a condenser is
A.To remove heat from condenser
B.To improve performance of a condenser
C.To discharge the heat exchanged in condenser to the surroundings
D.To remove the heat of superheat of the refrigerant before it enters the condenser
E.None of the above
