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Refrigeration and Air Conditioning Technician
DIRECT EXPANSION AIR CONDITIONING
Set 4
Set 4
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Q9936
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What is the benefit of VRV system?
A
Bigger in size
B
Many controls
C
Energy saving
D
Saving refrigerant
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Which type of AC system is capable of heating or cooling in different zones simultaneously?
A
Package AC
B
Central plant AC
C
VRV AC system
D
VAV AC system
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Which distribution system is absent in VRV operation compared to central AC plant?
A
Refrigeration
B
Ducting system
C
Refrigerant flow
D
Interlocked wiring
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Which version of motors are used in ductless multisplit system?
A
Bioptional drive
B
Trioptional drive
C
Variable frequency drive
D
Constant frequency drive
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Which refrigerant is used with VRF AC system?
A
R 11
B
R 12
C
R 502
D
R 410A
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