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Study MCQ
Refrigeration and Air Conditioning Technician
HVAC PLANT
Set 3
Set 3
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Q10058
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Which process increases the specific humidity of air at constant dry bulb temperature?
A
Humidification of air
B
Sensible cooling of air
C
Sensible heating of air
D
Dehumidification of air
Q10059
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Which process decreases the dry bulb temperature of air at constant specific humidity?
A
Humidification of air
B
Sensible cooling of air
C
Sensible heating of air
D
Dehumidification of air
Q10060
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What is the direction of airflow delivered in a centrifugal blower?
A
Parallel to the shaft
B
Perpendicular to the shaft
C
Inclined throw of air vertically
D
Inclined throw of air horizontally
Q10061
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Which property is considered for a temperature range in selecting a lubricant oil?
A
Natural
B
Artificial
C
Viscosity
D
Cost effective
Q10062
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Which device controls the air flow in ducting system?
A
Grille
B
Damper
C
Register
D
Diffuser
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