A switchboard for an AC electrical system requires the use of which of the following devices?A.Frequency meter.B.Ohmmeter.C.Induction voltage regulator.D.Current transformer governor.
A switchboard for an AC electrical system requires the use of which of the following devices?
A.Frequency meter.
B.Ohmmeter.
C.Induction voltage regulator.
D.Current transformer governor.
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