HVAC PLANT - Practice Mode

1) Why the capacitor is tested inside a box or case?

Explodes safely Erodes the test kit Corrodes the test kit Releases poisonous gas

Correct Answer: Explodes safely

2) 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

Correct Answer: Avoid vibration of air transmission

3) 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

Correct Answer: Prevent oil foaming on restarting compressor

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

500 1000 1500 2000

Correct Answer: 1000

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

Cutting pliers Screw spanner Ratchet key/wrench Double end spanner

Correct Answer: Ratchet key/wrench

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