2.5
3
4
5
✅ The correct answer is option D.
Heat Transfer
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the
expansion valve to the evaporator
evaporator to the thermostat
condenser to the expansion valve
condenser to the evapo
✅ The correct answer is option D.
The thermostatic expansion valve is used in __________ type of evaporators.
flooded
DX coil
dry
✅ The correct answer is option C.
In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = By-pass factor)
B.P.F. – 1
1 – B.P.F.
1 + B.RF.
✅ 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.