A transformer on a pole near a factory steps the voltage down from 3,600 V (rms) to 120 V (rms). The transformer is to deliver 1350 kW to the factory at 89% efficiency. (a) Find the power delivered to the primary. kW (b) Find the current in the primary. A (c) Find the current in the secondary.

A transformer on a pole near a factory steps the voltage down from 3,600 V (rms) to 120 V (rms). The transformer is to deliver 1350 kW to the factory at 89% efficiency. (a) Find the power delivered to the primary. kW (b) Find the current in the primary. A (c) Find the current in the secondary.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 40A

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Question

A transformer on a pole near a factory steps the voltage down from 3,600 V (rms) to 120 V (rms). The transformer is to deliver 1350 kW to the factory at 89% efficiency.

(a) Find the power delivered to the primary.
kW

(b) Find the current in the primary.
A

(c) Find the current in the secondary.
A

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