it considerably reduces mass of the system
it improves the C.O.P., as the condenser is small
the positive work in isentropic expansion of liquid is very small
it leads to significan
✅ The correct answer is option C.
Heat Transfer
The heat of sun reaches to us according to
conduction
convection
radiation
none of these
✅ The correct answer is option C.
The material of pipe lines for a system using ammonia as a refrigerant should be copper.
Yes
No
✅ The correct answer is option B.
Air refrigerator works on
reversed Carnot cycle
Bell Coleman cycle
both (a) and ib)
none of these
✅ The correct answer is option C.
When the discharge pressure is too high in a refrigeration system, high pressure control is installed to stop the compressor.
Correct
Incorrect
✅ The correct answer is option A.
The sensible heat during humidification process decreases.
TRUE
FALSE
✅ The correct answer is option B.
R-12 has the __________ freezing point.
lowest
highest
✅ The correct answer is option A.
The capacity of a domestic refrigerator is in the range of
0.1 to 0.3 TR
1 to 3 TR
3 to 5 TR
5 to 7 TR
✅ The correct answer is option A.
The use of heat exchangers is made in
radiators in automobile
condensers and boilers in steam plants
condensers and evaporators in refrigeration and air conditioning units
all of the above
✅ The correct answer is option D.