Multiple choice

The attitude indicator works on the principle of

  1. gyroscope

  2. pressure difference

  3. gravity

  4. radio waves
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A Correct answer
Explanation

The attitude indicator (artificial horizon) operates on gyroscopic principles. A gyro rotor spins at high speed, maintaining its orientation in space due to angular momentum (rigidity in space). The instrument displays the aircraft's attitude relative to this gyro-stabilized reference. It does not use pressure, gravity, or radio waves - those are used by altimeter, turn coordinator, and VOR respectively.

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