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MRAC Set-1
HVAC Plant
37

HVAC Plant MCQ with Answers

37) Why the AHU outlet is connected to supply duct with canvas material?

Quick replacement

Low installation cost

Low maintenance cost

Avoid vibration of air transmission

Answer is:

Avoid vibration of air transmission

HVAC Plant MCQ with Answers

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Related HVAC Plant MCQ with Answers

38) Why the crankcase heater is energised for compressor during the shut down period of AC plant?

Increase viscosity of crankcase oil

Decrease viscosity of crankcase oil

Increase miscibility of oil with refrigerant

Prevent oil foaming on restarting compressor

Answer is:

Prevent oil foaming on restarting compressor

39) What is the equivalent of 1 mm of Hg in terms of microns?

500

1000

1500

2000

Answer is:

1000

40) Which tool is used for service valve operations in package AC?

Cutting pliers

Screw spanner

Ratchet key/wrench

Double end spanner

Answer is:

Ratchet key/wrench

41) Which is the minimum vaccum level preferred in microns before gas charging a system?

2000

1750

750

500

Answer is:

500

HVAC Plant MCQ with Answers

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