0.3
0.6
0.67
1.5
✅ The correct answer is option B.
Heat Transfer
A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.
higher
lower
✅ The correct answer is option B.
The humidity ratio or specific humidity is the mass of water vapour present in
1 m3 of wet air
1 m3 of dry air
1 kg of wet air
1 kg of dry air
✅ The correct answer is option D.
During adiabatic saturation process on unsaturated air __________ remains constant.
relative humidity
dew point temperature
dry bulb temperature
wet bulb temperature
✅ The correct answer is option D.
In case of solids, the heat transfer takes place according to radiation.
Correct
Incorrect
✅ The correct answer is option B.
The critical radius is the insulation radius at which the resistance to heat flow is
maximum
minimum
zero
none of these
✅ The correct answer is option B.
The subcooling in a refrigeration cycle
does not alter C.O.P.
increases C.O.P.
decreases C.O.P.
none of these
✅ The correct answer is option B.
The formation of frost on cooling coils in a refrigerator
increases heat transfer
improves C.O.P. of the system
increases power consumption
reduces power consumption
✅ The correct answer is option C.
The heat transfer by conduction through a thick sphere is given by
✅ The correct answer is option B.