Important MCQ questions for GATE, ESE Engineering Service Examination, IES, PSU Examination and Study Material For Electrical and Electronics Engineering in Circuit Theory, Network Theory, Material Science, Power System, Control System, Measurement, Power Electronics, Transformer and Electrical Machine, Control System, EMT, Power Electronics, Microprocessor and Communication System.
On the two side of star/delta transformers
Voltage and current are both in phase
the voltage and current both differ in phase by 30 degree.
the voltage differ in phase by 30 degree but currents are in phase.
the current differ in phase by 30 degree but voltages are in phase.
Answer : the voltage and current both differ in phase by 30 degree.
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