FE Electrical & Computer · Power Systems

FE Power Systems Practice Questions

Solve FE-style Power Systems questions and learn the reasoning behind each answer through interactive engineering cases.

Interactive problems•Reasoning explained•Solutions included

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E-031 · FE ELECTRICAL & COMPUTER Power Systems

The 8 Ohm Load That Became 128 Ohms

The secondary load was 8 Ω. The primary source did not see 8 Ω—or even 32 Ω.

Transformer Reflected Impedance Intermediate 5–10 min

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PRACTICE SET

FE Power Systems Practice Questions

Choose a question and solve it before reading the final engineering verdict.

E-031Power Systems

The 8 Ohm Load That Became 128 Ohms

The secondary load was 8 Ω. The primary source did not see 8 Ω—or even 32 Ω.

Transformer Reflected Impedance5–10 min

E-030Power Systems

The Feeder That Delivered 228 V Instead of 240 V

The source measured 240 V. The load saw only 228 V because the feeder resistance was treated as one-way.

Distribution Voltage Drop5–10 min

E-029Power Systems

The Motor Load That Drew More Current Than the kW Suggested

The load was only 30 kW, but the feeder current was much higher than the kW-only calculation predicted.

Three Phase Power Factor5–10 min

QUICK ANSWER

What should I practice in FE Power Systems?

Practice the calculations, assumptions, constraints, and failure modes that appear around this topic. Each question here is designed to test whether you can apply the concept when the obvious calculation is not the whole engineering decision.