21) The statement that when any two bodies are in thermal equilibrium with third, they are also equal thermal equilibrium with each other is

first law of thermodynamics

zeroth law of thermodynamics

second law of thermodynamics

none of the above

Answer is:

zeroth law of thermodynamics

Explanation:

Zeroth law of thermodynamics : Zeroth law of thermodynamics states that, when two bodies are in thermal equilibrium with a third body. They are also in thermal equilibrium with each other.

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

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22) Frigorific mixture is the mixture of

Ice and Salt

Ammonia and Freon

Freon-1 and Salt

Freon-22 and Salt

Answer is:

Ice and Salt

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

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

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

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21) The statement that when any two bodies are in thermal equilibrium with third, they are also equal thermal equilibrium with each other is

zeroth law of thermodynamics

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

22) Frigorific mixture is the mixture of

Ice and Salt

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

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

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