before entering the compressor
after leaving the compressor
before entering the condenser
after leaving the cond
✅ The correct answer is option A.
Heat Transfer
Carbon dioxide is
colourless
odourless
non-flammable
all of these
✅ The correct answer is option D.
The heat is transferred by conduction, convection and radiation in
melting of ice
boiler furnaces
condensation of steam in condenser
none of these
✅ The correct answer is option B.
The mass of water vapour present in __________ is called absolute humidity.
1 m3 of wetair
1 m3 of dry air
1 kg of wet air
1 kg of dry air
✅ The correct answer is option B.
The expression is used for calculating
relative humidity
humidity ratio
degree of saturation
pressure of water vapo
✅ The correct answer is option B.
In a domestic vapour compression refrigerator, the refrigerant commonly used is
CO2
Ammonia
R-12
all of these
✅ The correct answer is option C.
The refrigerant carbon dioxide is not widely used because of its __________ power require ments per tonne of refrigeration and high operating pressures.
low
high
✅ The correct answer is option B.
The wet bulb temperature at 100% relative humidity is __________ dew point temperature.
same as
lower than
higher than
✅ The correct answer is option A.
For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
reciprocating
rotating
centrifugal
screw
✅ The correct answer is option C.
The capillary tube, as an expansion device, is used in
domestic refrigerators
water coolers
room air conditioners
all of these
✅ The correct answer is option D.