Question

There is a single-phase transformer, 500 kva, 10000/440 v, 60 hz, when it operates at full load with a power factor of 0.8 in lag, its efficiency is 98% .when it operates at 50% of its load, its factor of power is one and its efficiency is 99% .if the transformer's short-circuit voltage is 4.5% of the rated voltage, and its excitation current is 1.3% of the rated current.
a.determine the vacuum and short-circuit parameters of the transformer (3 points)
b.determine the regulation at full load and with an inductive power factor of 0.7

Answer 1

Respuesta:

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Explicación: