CENTRAL AIR CONDITIONING - Practice Mode

1) Which RAC system belongs to centralised air conditioning?

Split AC Window AC Cassette AC Chiller plant AC

Correct Answer: Chiller plant AC

2) What is the percentage of HCl used for making descaling solution with water?

0.01 0.05 0.15 0.55

Correct Answer: 0.05

3) Which instrument is used to measure the total pressure in an air duct?

Hygrometer Velocimeter Anemometer Pitot tube manometer

Correct Answer: Pitot tube manometer

4) What is meant by total pressure in a duct?

Velocity pressure - static pressure Static pressure + velocity pressure Velocity pressure + suction pressure Suction pressure + discharge pressure

Correct Answer: Static pressure + velocity pressure

5) Which device controls the moisture in AC room air?

Humidistat Hydrometer Hygrometer Anemometer

Correct Answer: Humidistat

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