CENTRAL AIR CONDITIONING - Practice Mode

1) Why the stainless-steel metal is used to make evaporator in ice plant?

Erosive Galvanic Reactive Non corrosive

Correct Answer: Non corrosive

Explanation:

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2) Which gauge is connected to the AC plant system before doing pump down operation?

Compound gauge Oil pressure gauge High pressure gauge Water pressure gauge

Correct Answer: Compound gauge

3) Why the glass wool insulation is avoided in ducts?

Less strength High conductivity Not resistant to water Allows vapour transmission

Correct Answer: Allows vapour transmission

4) What is the effect of scale formation inside the tubes of chiller in industrial AC plant?

Reduce heat transfer Increase heat transfer Increase suction pressure Decrease power consumption

Correct Answer: Reduce heat transfer

5) Which parameter is checked if the air flow in supply duct is reduced in central AC plant?

Condenser temperature Cooling water temperature Blower motor ampere/speed Compressor discharge temperature

Correct Answer: Blower motor ampere/speed

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