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

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

For more MCQ's Click Here

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

43) Using a refrigerator having COP of 3.5 and compressor rating 2 kW the maximum heat that can be removed per second is

7000 J

570 kJ

1.75 kJ

1.5 kJ

Answer is:

7000 J

44) If the refrigerator or air conditioner is ?over charged? (excess gas filling), the result will be

More efficient cooling

Over heating of the system and damage of the compressor

System will not start or cool

Excess gas will be released to the atmosphere and system will work normally

Answer is:

Over heating of the system and damage of the compressor

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

For more MCQ's Click Here

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

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

41) pressure gauge measures

None of the above

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

Freon 22

43) Using a refrigerator having COP of 3.5 and compressor rating 2 kW the maximum heat that can be removed per second is

7000 J

44) If the refrigerator or air conditioner is ?over charged? (excess gas filling), the result will be

Over heating of the system and damage of the compressor

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