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MRAC Set-1
HVAC Plant
9

HVAC Plant MCQ with Answers

9) Which instrument measures the humidity of air?

Barometer

Manometer

Hygrometer

Hydrometer

Answer is:

Hygrometer

HVAC Plant MCQ with Answers

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Related HVAC Plant MCQ with Answers

10) Which psychometric process takes place if the air is passed through hygroscopic chemicals?

Sensible heating of air

Heating and humidification

Heating and cleaning of air

Heating and dehumidification

Answer is:

Heating and dehumidification

11) Which process increases the specific humidity of air at constant dry bulb temperature?

Humidification of air

Sensible cooling of air

Sensible heating of air

Dehumidification of air

Answer is:

Humidification of air

12) Which process decreases the dry bulb temperature of air at constant specific humidity?

Humidification of air

Sensible cooling of air

Sensible heating of air

Dehumidification of air

Answer is:

Sensible cooling of air

13) What is the direction of airflow delivered in a centrifugal blower?

Parallel to the shaft

Perpendicular to the shaft

Inclined throw of air vertically

Inclined throw of air horizontally

Answer is:

Perpendicular to the shaft

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