Exam Practice Questions And Correct

FAA Mechanic General (AMG) Knowledge Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

Airframe, Powerplant, General

• What is the purpose of the ailerons on an aircraft?
• To control yaw
• To control pitch
• To control roll
• To control engine power

Rationale: Ailerons are hinged surfaces on the trailing edge of the

wings that control the rolling motion of an aircraft about its longitudinal axis.

• What component converts engine torque into propeller thrust?
• Carburetor
• Alternator 1 / 4

• Propeller
• Magneto

Rationale: The propeller converts the rotational power of the engine

into thrust, propelling the aircraft forward.

• What is the function of the stabilator on an aircraft?
• Control roll
• Control pitch
• Control yaw
• Control engine RPM

Rationale: A stabilator is a horizontal tail surface that combines the

functions of the stabilizer and elevator to control pitch.

• What is the primary purpose of wing flaps?
• Increase cruise speed
• Increase lift and drag during takeoff and landing
• Control yaw
• Control roll

Rationale: Flaps increase the camber and surface area of the wing,

increasing lift at lower speeds, which is useful during takeoff and landing.

• Which type of inspection is required every 100 hours on an aircraft

used for hire?

• 100-hour inspection
• Annual inspection 2 / 4

• Progressive inspection
• Preflight inspection

Rationale: FAA regulations require aircraft used for hire to undergo a

100-hour inspection to ensure continued airworthiness.

• What is the purpose of the pitot tube?
• Measure altitude
• Measure airspeed
• Measure engine pressure
• Measure temperature

Rationale: The pitot tube measures dynamic air pressure, which is

used to determine airspeed.

• Which control surface is responsible for yaw?
• Aileron
• Elevator
• Rudder
• Flap

Rationale: The rudder, located on the vertical stabilizer, controls the

aircraft’s movement around the vertical axis (yaw).

• What type of fuel is used in turbine engines?

A. 100LL

B. MOGAS

• Jet-A

D. AVGAS 80 3 / 4

Rationale: Jet-A is a kerosene-based fuel used in turbine engines,

including turboprops and jet engines.

• What is the purpose of a magneto in an aircraft engine?
• Lubricate engine
• Provide electrical current for spark plugs
• Measure engine RPM
• Pump fuel

Rationale: A magneto is a self-contained ignition system that

generates high voltage to fire the spark plugs.

• What is the effect of a forward CG (center of gravity) on an

aircraft?

• Increased longitudinal stability, higher stall speed
• Decreased stability, lower stall speed
• No effect on stability
• Decreased stall speed, higher maneuverability

Rationale: A forward CG makes the aircraft more stable but requires

higher speed to maintain lift, raising the stall speed.

• Which type of lightning protection is commonly used in aircraft?
• Rubber tires
• Static wicks
• Magnetos
• Fuel additives
• / 4