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University Electrical Engineering: 15 Hard Questions

Review 15 challenging electrical engineering questions on AC power, power factor correction, circuit laws, capacitance and inductance, and electrical machines. Use this practice set to reinforce core concepts and identify topics for further study.

Question 14

Why are electric motors commonly rated in kW while transformers are commonly rated in kVA?

B. A motor transfers only reactive power, while a transformer transfers only active power D. A transformer consumes no current, while a motor's current is independent of load C. A motor's power factor is always unity, while a transformer has no voltage rating A. A motor is a load with a characteristic power factor, while a transformer's power factor depends on its connected load

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