These Heat Transfer, Refrigeration and Air Conditioning multiple-choice questions and their answers will help you strengthen your grip on the subject of Heat Transfer, Refrigeration and Air Conditioning. You can prepare for an upcoming exam or job interview with these Heat Transfer, Refrigeration and Air Conditioning MCQs.
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A. Same in winter and summer
B. Higher in winter than in summer
C. Lower in winter than in summer
D. Not dependent on season
A. Concrete
B. Iron
C. Lead
D. Wood
A. 50 to 70° C
B. None of these
C. 20 to 50° C
D. 70 to 110° C
A. Remains constant
B. Decreases
C. Increases
A. Single fluid
B. Two fluids
C. Three fluids
A. The mass of water vapour present in 1 m3 of dry air
B. The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure
C. The mass of water vapour present in 1 kg of dry air
D. The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure.
A. Incorrect
B. Correct
A. Increases C.O.P.
B. None of these
C. Does not alter C.O.P.
D. Decreases C.O.P.
A. Equal to
B. Greater than
C. Less than
A. Yes
B. No
A. Specific humidity
B. Wet bulb temperature
C. Dry bulb temperature
D. Relative humidity
A. Pb = pa/pv
B. Pb = pa + pv
C. Pb = pa - pv
D. Pb = pa x pv
A. Ammonia and water
B. Water and lithium bromide
C. Water and water
D. Ammonia and lithium bromide
A. Small displacements and low condensing pressures
B. Large displacements and low condensing pressures
C. Small displacements and high condensing pressures
D. Large displacements and high condensing pressures
A. All of these
B. Physical property of a substance
C. Function of temperature
D. Dimensionless parameter
A. All of these
B. Lack of cooling water
C. Water temperature being high
D. Dirty condenser surface
A. Wet bulb depression
B. Dew point depression
C. Degree of saturation
D. Dry bulb depression
A. The mass of water vapour present in 1 kg of dry air
B. The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure
C. The mass of water vapour present in 1 m3 of dry air
D. The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure.
A. Specific humidity
B. Relative humidity
C. Wet bulb temperature
D. Dry bulb temperature
A. 2 KW
B. 3 kW
C. 1 kW
D. 4 kW
A. Convection
B. Conduction
C. Radiation
D. Reflection