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Aircraft systems and instrumentsQuestion 584 of 934

In an airplane with a fixed-pitch propeller, which instrument indicates engine power?

  1. The manifold pressure gauge
  2. The tachometer
  3. The oil pressure gauge
  4. The airspeed indicator
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Correct answer: The tachometer

In a fixed-pitch propeller, the tachometer is the indicator of engine power.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7: Aircraft Systems — Propeller — Fixed-Pitch Propeller, page 165

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026