38) An auto defrost refrigerator has the following specialty

A Thermostat is attached to the evaporator coil

A fan blows air over the evaporator coils

A heating element is wound over the evaporator coils

No evaporator coil is used

Answer is:

A fan blows air over the evaporator coils

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

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39) The advantage of an inverter Air Conditioner is

It works even during short power failure and gives very high cooling

It uses D.C. power supply for running compressor and is very efficient

Very silent operation, since battery power is used

Uses no conventional refrigerants and hence ozone depletion threat is not

Answer is:

It uses D.C. power supply for running compressor and is very efficient

40) In large air-conditioning units used in big offices, factories, etc. where huge amount of air to be cooled, compressor used is type

Reciprocating

Screw or Centrifugal

Scroll

Rotary

Answer is:

Screw or Centrifugal

41) pressure gauge measures

Total pressure

Atmospheric pressure

Absolute pressure

None of the above

Answer is:

None of the above

42) Mono Chloro Di Fluoro Methane is a refrigerant known as

Freon 12

Freon 22

Freon 122

Freon 500

Answer is:

Freon 22

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

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38) An auto defrost refrigerator has the following specialty

A fan blows air over the evaporator coils

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

39) The advantage of an inverter Air Conditioner is

It uses D.C. power supply for running compressor and is very efficient

40) In large air-conditioning units used in big offices, factories, etc. where huge amount of air to be cooled, compressor used is type

Screw or Centrifugal

41) pressure gauge measures

None of the above

42) Mono Chloro Di Fluoro Methane is a refrigerant known as

Freon 22

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