23) A condenser of refrigeration system rejects heat at the rate of 120 kW, while the compressor consumes the power of 30 kW. The coefficient of performance of the system will be

1/4

1/3

Answer is:

4

ISRO Technician-B MRAC Question Paper - 2016 (Set -1) with Answer Key

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24) The temperature of air recorded by a thermometer, when it is not affected by the moisture present in the air is called

Wet bulb temperature

Dry bulb temperature

Dew point temperrature

Atmospheric temperature

Answer is:

Dry bulb temperature

25) 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, is called

Relative humidity

Humidity ratio

Degree of saturation

Absolute humidity

Answer is:

Relative humidity

26) Pick up the wrong statement. A refrigerant should have

High latent heat of vaporization

High boiling point

Low specific heat of liquid

Higher critical temperature

Answer is:

High boiling point

27) In aircraft, air refrigeration cycle is used because of

Higher coefficient of performance

Low temperature at high altitudes

High heat transfer rate

Low weight of system per kg of refrigerant

Answer is:

Low weight of system per kg of refrigerant

ISRO Technician-B MRAC Question Paper - 2016 (Set -1) with Answer Key

For more MCQ's Click Here

23) A condenser of refrigeration system rejects heat at the rate of 120 kW, while the compressor consumes the power of 30 kW. The coefficient of performance of the system will be

4

ISRO Technician-B MRAC Question Paper - 2016 (Set -1) with Answer Key

Related ISRO Technician-B MRAC Question Paper - 2016 (Set -1) with Answer Key

24) The temperature of air recorded by a thermometer, when it is not affected by the moisture present in the air is called

Dry bulb temperature

25) 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, is called

Relative humidity

26) Pick up the wrong statement. A refrigerant should have

High boiling point

27) In aircraft, air refrigeration cycle is used because of

Low weight of system per kg of refrigerant

ISRO Technician-B MRAC Question Paper - 2016 (Set -1) with Answer Key