expansion valve to the evaporator
evaporator to the thermostat
condenser to the expansion valve
condenser to the evapo
✅ The correct answer is option D.
Heat Transfer
The thermostatic expansion valve is used in __________ type of evaporators.
flooded
DX coil
dry
✅ The correct answer is option C.
The material of pipe lines for a system using freon as a refrigerant should be
brass
copper
steel
aluminium
✅ The correct answer is option B.
The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.
increases
decreases
✅ The correct answer is option A.
The lowest thermal diffusivity is of
iron
lead
aluminium
rubber
✅ The correct answer is option D.
In a psychrometric chart, specific humidity (moisture content) lines are
vertical and uniformly spaced
horizontal and uniformly spaced
horizontal and non-uniformly spaced
curved lines
✅ The correct answer is option B.
The heating of air, without any change in its specific humidity, is known as sensible heating.
TRUE
FALSE
✅ The correct answer is option A.
A vapour absorption refrigeration system
gives noisy operation
gives quiet operation
requires little power consumption
cools below 0° C
✅ The correct answer is option B.
In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature
which lies between the dry bulb and wet bulb temperatures of the incoming stream
which lies between the wet bulb and dew point temperatures of the incoming stream
which is lower than the dew point temperature of the incoming stream
of adiabatic saturatio
✅ The correct answer is option C.
The expression Q = ρ AT4 is called
Fourier equation
Stefan-Boltzmann equation
Newton-Rikhmann equation
Joseph-Stefan equation
✅ The correct answer is option B.