46) The central air conditioning system has _____ overall efficiency as compared to individual systems.

Same

Lower

Higher

None of these

Answer is:

Higher

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

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47) A refrigerant with the highest critical pressure is

R-11

R-12

R-22

Ammonia

Answer is:

Ammonia

48) During dehumidification process, _____ remains constant.

Wet bulb temperature

Relative humidity

Dry bulb temperature

Specific humidity

Answer is:

Dry bulb temperature

49) In vapour compression cycle, the condition of refrigerant is ?dry saturated? vapour

After passing through the condenser

Before passing through the condenser

After passing through the expansion or throttle valve

Before entering the compressor

Answer is:

Before entering the compressor

50) The cooling system used for supersonic aircrafts and rockets is

Simple air cooling system

Bootstrap air cooling system

Reduced ambient air cooling system

Regenerative air cooling system

Answer is:

Regenerative air cooling system

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

For more MCQ's Click Here

46) The central air conditioning system has _____ overall efficiency as compared to individual systems.

Higher

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

47) A refrigerant with the highest critical pressure is

Ammonia

48) During dehumidification process, _____ remains constant.

Dry bulb temperature

49) In vapour compression cycle, the condition of refrigerant is ?dry saturated? vapour

Before entering the compressor

50) The cooling system used for supersonic aircrafts and rockets is

Regenerative air cooling system

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