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

To supply air for cabin pressurization

Answer

To cool the engine cylinders

Answer

To supply fuel pressure to the carburetor

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

Altimeter freezes

Answer

Turn coordinator fails

Answer

Vertical speed indicator shows a steady climb

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

Ice in the fuel tank; occurs below -40°C

Answer

Ice on the engine cowling; occurs in heavy precipitation

Answer

Ice blocking the exhaust; occurs in winter only

Question 4

What is the function of the aircraft vacuum system?

Accepted Answer

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

Answer

To provide pressure for cabin pressurization

Answer

To supply fuel pressure as a backup

Answer

To cool the avionics bay

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

Power increases due to cooler temperatures

Answer

Power remains constant up to the service ceiling

Answer

Power increases to the critical altitude then drops

Question 6

What does the VSI (Vertical Speed Indicator) display?

Accepted Answer

Rate of climb or descent in feet per minute

Answer

Groundspeed in knots

Answer

True airspeed

Answer

Density altitude