Refrigeration and Air Conditioning MCQ Questions
Refrigeration and Air Conditioning MCQ Questions
1-One ton of refrigeration is equal to
(A) 21 KJ/min
(B) 105 KJ/min
(C) 210 KJ/min
(D) 420 KJ/min
2-A low side float valve maintains the level of refrigerant in
(A) Flooded evaporator
(B) Evaporator
(C) Condenser
(D) Compressor
3-When wet bulb and dry bulb temperature are equal the humidity is
(A) 60%
(B) 80%
(C) 90%
(D) 100%
4-The refrigerant used in water cooler is
(A) R21
(B) R22
(C) R134a
(D) R717
5-The thermostat used for the window type air conditioner is set at:
(A) 65°F
(B) 75°F
(C) 80°F
(D) 85°F
6-Name the temperature at which moisture condenses on a surface:
(A) Relative humidity
(B) Grains of moisture
(C) Dew point temperature
(D) Humidity
7-A compressor externally coupled to a motor is called
(A) Open type compressor
(B) Semi-sealed compressor
(C) Hermitically sealed compressor
(D) None of the above
8-Brine solution density is checked by
(A) Tachometer
(B) Anemometer
(C) Barometer
(D) Hydrometer
9-Compressor used in Window Air Conditioner is
(A) Rotary compressor
(B) Reciprocating compressor
(C) Sealed compressor
(D) Open type compressor
10-Following is the heart of refrigeration system
(A) Condenser
(B) Evaporator
(C) Compressor
(D) None of the above
ANSWERS:
1-(C), 2-(A), 3-(D), 4-(B), 5-(B), 6-(C), 7-(C), 8-(D), 9-(A), 10-(C)