remains constant
increases
decreases
✅ The correct answer is option A.
Heat Transfer
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents
wet vapour region
superheated vapour region
sub-cooled liquid region
none of these
✅ The correct answer is option C.
A low wet bulb temperature indicates very __________ humidity.
low
high
✅ The correct answer is option A.
The ratio of Nusselt number and the product of Reynold’s number and Prandtl number is equal to
Stanton number
Biot number
Peclet number
Grashoff number
✅ The correct answer is option A.
The reciprocating refrigerant compressors are very suitable for
small displacements and low condensing pressures
large displacements and high condensing pressures
small displacements and high condensing pressures
large displacements an
✅ The correct answer is option C.
In counter-current flow heat exchanger, the logarithmic temperature difference between the fluids is __________ as compared to parallel flow heat exchanger.
same
less
greater
✅ The correct answer is option C.
The transfer of heat from one body to another takes place only when there is a temperature difference between the bodies.
Yes
No
✅ The correct answer is option A.
The process, generally used in winter air-conditioning to warm and humidity the air, is called
humidification.
dehumidification
heating and humidification
cooling and dehumidifi
✅ The correct answer is option C.
The absolute humidity is the mass of water vapour present in 1 m3 of dry air.
Agree
Disagree
✅ The correct answer is option A.
If the evaporator temperature is kept constant, the coefficient of performance of a refrigeration cycle __________ with the increase in condenser temperature.
increases
decreases
✅ The correct answer is option B.