TransformersQuestion 208 of 1506

What can a motor-generator set do for a load that a transformer cannot?

Run with no moving parts to wear
Step voltage up with no losses at all
Produce more power than it takes in
It rides through a short loss of supply

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Correct answer: It rides through a short loss of supply

The spinning mass keeps turning the generator for a moment, which hides short glitches in the supply.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 10.2: Step-up and Step-down Transformers

Questions last reviewed: 18 October 2026

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