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Set 3
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Q13644
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Which is the advantage of AC drive?
A
Power and control circuit are simple
B
Speed and design ratios have upper limits
C
Produce a simulated wave form
D
Heavy windings required
Q13645
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Which colour LED indicates the fault occurred in drives?
A
Green
B
Yellow
C
Red
D
Blue
Q13646
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What is the expansion of UPS?
A
Uninterrupted Power System
B
Uninterrupted Power Supply
C
Uninterrupted Power Solution
D
Uninterrupted Power Section
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What is the relation between back up time and capacity of the battery of an UPS?
A
Capacity of battery increases back up time increases
B
Capacity of battery increases back up time decreases
C
Capacity of battery decreases back up time increases
D
Capacity of battery has no relations with back up time
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Which component is connected across the transformer winding of an UPS for protection from lightning?
A
Diode
B
Transistor
C
Triode
D
Polyster capacitor
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