Test on Aircraft Propeller Systems and Control

Question 1: The pilot directly adjusts an oil valve inside the governor to change the operating speed of a constant-speed propeller.

A. Ano

B. Ne

Explanation: To change the speed at which a constant-speed propeller is operating, the compression of the speeder spring is adjusted inside the governor, not a manually operated oil valve. A controllable-pitch propeller uses a manually operated oil valve, while a constant-speed propeller uses a governor to control the valve.

Question 2: What effect does centrifugal twisting moment have on a propeller blade?

A. It tends to move the blades toward high pitch.

B. It tends to move the blades toward low pitch.

C. It has no effect on the blade's pitch.

D. It causes the blades to feather.

Explanation: Centrifugal twisting moment on a propeller blade tends to move the blades toward low pitch.

Question 3: During a magneto check on an engine with a constant-speed propeller, the propeller control should be in the HIGH PITCH position.

A. Ano

B. Ne

Explanation: For a magneto check on an engine equipped with a constant-speed propeller, the propeller control should be in the LOW PITCH position.

Question 4: The propeller control must be in the LOW PITCH position during a magneto check for an engine with a constant-speed propeller.

A. Ano

B. Ne

Explanation: The study materials state that when making a magneto check on an engine equipped with a constant-speed propeller, the propeller control should be in the LOW PITCH position.

Question 5: What is the recommended propeller control setting during a magneto check for an engine equipped with a constant-speed propeller?

A. High Pitch

B. Low Pitch

C. Feathered

D. Cruise

Explanation: When making a magneto check on an engine equipped with a constant-speed propeller, the propeller control should be in the LOW PITCH position.