Using the transformer data shown, what secondary voltage is expected for an ideal transformer?

NASCLA Electrical exam practice question · Electrical Theory & Principles

Using the transformer data shown, what secondary voltage is expected for an ideal transformer?

A480 volts
120 volts
C4 volts
D1,920 volts

Why B is correct

Ideal transformer voltage follows turns ratio, so 480 divided by 4 is 120 volts. The best answer is therefore “120 volts.” The other choices either address a different system, rely on an unsafe shortcut, or make a conclusion not supported by the stated facts.

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Using the transformer data shown, what secondary voltage is expected for an ideal transformer?

Using the transformer data shown, what secondary voltage is expected for an ideal transformer?

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