CENTRAL AIR CONDITIONING - Quiz

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

Erosive Galvanic Reactive Non corrosive

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

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

Less strength High conductivity Not resistant to water 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

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