Classification of Aircraft Instruments - Module -2

Aircraft instruments are broadly classified into how many main categories?

• 2

• 3

• 4

• 5

Which of the following is NOT an air data instrument?

• Airspeed Indicator

• Vertical Speed Indicator

• Attitude Indicator

• Altimeter

The airspeed indicator measures speed using which type of pressure?

• Static pressure

• Dynamic pressure

• Pitot pressure

• Absolute pressure

The vertical speed indicator (VSI) measures the rate of climb or descent using:

• Differential static pressure

• Pitot pressure

• Gyroscopic precession

• Atmospheric pressure

What is the main principle used by an altimeter to determine altitude?

• Barometric pressure changes

• Gyroscopic rigidity

• Pitot-static principle

• GPS triangulation

Which instrument uses both pitot and static pressure?

• Altimeter

• Airspeed Indicator

• Vertical Speed Indicator

• Magnetic Compass

If the pitot tube is blocked but the static port is open, what will the airspeed indicator show?

• No change in reading

• Over-read at higher altitude

• Under-read at higher altitude

• Zero airspeed

In the pitot-static system, the static port provides pressure for which instrument(s)?

• Airspeed Indicator

• Altimeter

• Vertical Speed Indicator

• All of the above

What are the two fundamental properties of a gyroscope?

• Rigidity in space and Precession

• Lift and Drag

• Thrust and Weight

• Stability and Control

Gyroscopic precession causes a force applied to a spinning gyroscope to act:

• In the same direction of rotation

• 90° ahead in the direction of rotation

• 90° behind in the direction of rotation

• Opposite to the rotation