Refrigeration & Air-Conditioning MCQ Question with Answer

Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Download Refrigeration & Air-Conditioning MCQ Question Answer PDF

Question No : 15
During humidification process, __________ increases.

Wet bulb temperature

Relative humidity

Dry bulb temperature

Specific humidity

View Answer Discuss

Question No : 16
Condensing temperature in a refrigerator is the temperature

Of cooling medium

Of freezing zone

Of evaporator

At which refrigerant gas becomes liquid

View Answer Discuss

Question No : 17
The coefficient of performance is the ratio of the refrigerant effect to the

Heat of compression

Work done by compressor

Enthalpy increase in compressor

All of the above

View Answer Discuss

Question No : 18
In vapour compression cycle, the condition of refrigerant is very wet vapour

After passing through the condenser

Before passing through the condenser

After passing through the expansion or throttle valve

Before entering the compressor

View Answer Discuss

Question No : 19
If a gas is to be liquefied, its temperature must be

Increased to a value above its critical temperature

Reduced to a value below its critical temperature

Equal to critical temperature

None of the above

View Answer Discuss

Question No : 20
The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature of air entering the cooling coil, td₂ = Dry bulb temperature of air leaving the cooling coil, and td₃ = Dry bulb temperature of the cooling coil)

(td₁ -td₃)/( td₂ -td₃)

(td₂ -td₃)/( td₁ -td₃)

(td₃ -td₁)/( td₂ -td₃)

(td₃ -td₂)/( td₁ -td₃)

View Answer Discuss