aircraft systemsFAA-published question bank (Private Pilot, 2008)
What is an advantage of a constant-speed propeller?
A
Permits the pilot to select and maintain a desired cruising speed.
B
Permits the pilot to select the blade angle for the most efficient performance.✓ Correct Answer
C
Provides a smoother operation with stable RPM and eliminates vibrations.
Explanation
A constant-speed propeller lets the pilot select the blade angle (through the RPM setting) that is most efficient for each phase of flight, and the governor then holds that RPM automatically, as PHAK Chapter 7 describes. It does not select a cruising speed, and eliminating vibration is not its purpose.
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