Meters and troubleshootingQuestion 1183 of 1506

A vibrating-reed meter on a small engine-driven generator set is used for what purpose?

  1. Measuring the true power of the set
  2. Measuring the winding insulation of the set
  3. Setting engine speed near 60 Hz
  4. Finding the phase sequence of the set
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Correct answer: Setting engine speed near 60 Hz

The meter shows an approximate frequency. It is simple and rugged, but not a precision instrument.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 12.2: Frequency and Phase Measurement

Practice meters and troubleshooting

Questions last reviewed: 18 October 2026