32) The temperature at which ammonia changes from liquid state to gaseous state is (at atmospheric condition)

0 degree

33.33 degree

239.8 K

223.8K

Answer is:

239.8 K

ISRO Technician-B MRAC Question Paper - 2019 (Set-1) with Answer Key

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33) Decrease of DBT is seen during

Sensible cooling

Sensible heating and dehumidification

Humidification

Dehumidification

Answer is:

Sensible cooling

34) In India, the agency that conducts the testing and certify the energy efficiency of electrical appliances including air conditioners is

Bureau of Indian Standards (BIS)

Indian Standards Institute (ISI)

Bureau of Energy Efficiency (BEE)

Electricity Regulatory Authority of India

Answer is:

Bureau of Energy Efficiency (BEE)

35) Isobutane (R-600a) and propane (R-290) are preferred over halogenated refrigerants because of

Low cost, high energy efficiency

Low flammability and lower attainable temperatures

Low ozone depleting potential

Options (a) and ( c)are correct, but not (b)

Answer is:

Options (a) and ( c)are correct, but not (b)

36) The use of accumulator in refrigerator is

To collect condensate gases from compressor

For storing refrigerants from the compressor

Exchange of heat

Storing liquid refrigerant after evaporation

Answer is:

Storing liquid refrigerant after evaporation

ISRO Technician-B MRAC Question Paper - 2019 (Set-1) with Answer Key

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32) The temperature at which ammonia changes from liquid state to gaseous state is (at atmospheric condition)

239.8 K

ISRO Technician-B MRAC Question Paper - 2019 (Set-1) with Answer Key

Related ISRO Technician-B MRAC Question Paper - 2019 (Set-1) with Answer Key

33) Decrease of DBT is seen during

Sensible cooling

34) In India, the agency that conducts the testing and certify the energy efficiency of electrical appliances including air conditioners is

Bureau of Energy Efficiency (BEE)

35) Isobutane (R-600a) and propane (R-290) are preferred over halogenated refrigerants because of

Options (a) and ( c)are correct, but not (b)

36) The use of accumulator in refrigerator is

Storing liquid refrigerant after evaporation

ISRO Technician-B MRAC Question Paper - 2019 (Set-1) with Answer Key