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

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

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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

28) The evaporator changes the low pressure liquid refrigerant from the expansion valve into

Low pressure liquid and vapour refrigerant

Low pressure vapour refrigerant

High pressure liquid refrigerant

None of these

Answer is:

Low pressure vapour refrigerant

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

Dry bulb temperature

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

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

28) The evaporator changes the low pressure liquid refrigerant from the expansion valve into

Low pressure vapour refrigerant

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