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Study MCQ
Refrigeration and Air Conditioning Technician
CENTRAL AIR CONDITIONING
Set 1
Set 1
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Q9766
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Which RAC system belongs to centralised air conditioning?
A
Split AC
B
Window AC
C
Cassette AC
D
Chiller plant AC
Q9767
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What is the percentage of HCl used for making descaling solution with water?
A
0.01
B
0.05
C
0.15
D
0.55
Q9768
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Which instrument is used to measure the total pressure in an air duct?
A
Hygrometer
B
Velocimeter
C
Anemometer
D
Pitot tube manometer
Q9769
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What is meant by total pressure in a duct?
A
Velocity pressure - static pressure
B
Static pressure + velocity pressure
C
Velocity pressure + suction pressure
D
Suction pressure + discharge pressure
Q9770
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Which device controls the moisture in AC room air?
A
Humidistat
B
Hydrometer
C
Hygrometer
D
Anemometer
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