In order to minimize the inrush current in a single-phase transformer, – McqOptions

MCQOPTIONS

1.	In order to minimize the inrush current in a single-phase transformer, the supply switch should be closed at the instant when:
A.	supply voltage is \(\dfrac{1}{2}\) times the maximum voltage
B.	supply voltage is \(\dfrac{1}{\sqrt2}\) times the maximum voltage
C.	supply voltage is maximum
D.	supply voltage is zero
Answer» D. supply voltage is zero

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