3) The heat transfer by radiation takes place by means of

Electromagnetic waves

molecular energy interchanges

flow of electrons

flow of fluid

Answer is:

Electromagnetic waves

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

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4) A body which absorbs all the radiations falling on it is called

opaque body

white body

black body

transparent body

Answer is:

black body

5) Heat is absorbed by a refrigerant, during a refrigeration cycle in a

condenser

evaporator

compressor

throttle valve

Answer is:

evaporator

6) In a vapour compression refrigeration cycle, the lowest temperature occurs in

condenser

evaporator

compressor

throttle valve

Answer is:

evaporator

7) The co-efficient of performance (COP) is defined as

Workdone on the system/heat absorbed from the system

Heat absorbed from the system / work done on the system

Heat absorbed-work done/ work done on the system

Work done on the system / heat absorbed-work done

Answer is:

Heat absorbed from the system / work done on the system

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

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3) The heat transfer by radiation takes place by means of

Electromagnetic waves

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

4) A body which absorbs all the radiations falling on it is called

black body

5) Heat is absorbed by a refrigerant, during a refrigeration cycle in a

evaporator

6) In a vapour compression refrigeration cycle, the lowest temperature occurs in

evaporator

7) The co-efficient of performance (COP) is defined as

Heat absorbed from the system / work done on the system

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