Aviation Aircraft Systems

Question 1

What is the purpose of the aircraft pitot-static system?

Accepted Answer

To provide ram air pressure and static pressure for flight instruments

Answer

The pitot-static system supplies ram air (pitot) pressure and atmospheric (static) pressure to the airspeed indicator, altimeter, and vertical speed indicator.

Question 2

What indicates a blocked pitot tube during flight?

Accepted Answer

Airspeed indicator reads zero or fails to change with actual speed changes

Answer

A blocked pitot tube prevents ram air from entering the system, causing the airspeed indicator to read zero or remain frozen at the speed when the blockage occurred.

Question 3

What is carburetor icing, and at what conditions is it most likely?

Accepted Answer

Ice forming in the venturi of the carburetor due to cooling of fuel-air mixture; most likely in high humidity, 20°F–70°F (-7°C to 21°C)

Answer

Carburetor icing forms in the venturi as fuel vaporization and pressure drop cause temperature to fall below freezing, even in mild ambient temperatures with high humidity.

Question 4

What is the function of the aircraft vacuum system?

Accepted Answer

To drive the gyroscopic instruments (attitude indicator and heading indicator)

Answer

The vacuum system powers gyroscopic flight instruments — typically the attitude indicator and directional gyro (heading indicator).

Question 5

In a normally aspirated aircraft engine, as altitude increases, what happens to engine power?

Accepted Answer

Power decreases because air density decreases

Answer

As altitude increases, air density decreases, reducing the mass of air entering the engine and therefore decreasing engine power output.

Aviation Practice Test

Aviation Practice Test

Aviation Aircraft Systems