A 10 kVA, 400 V/200 V single-phase transformers with 10% impedance draws a steady short circuit line current of

The windings of a Q kVA, $$\frac{V_1}{V_2}$$ Volt, three-phase, Delta connected, core type transformer are reconnected to work as a single phase transformer. The maximum voltage and the power ratings of the new configuration are,

Starting torque can be obtained in the case of a single phase induction motor with identical main and auxiliary windings by connecting

The following starting method for an induction motor is inferior view of the poor starting torque per ampere of the line current drawn: