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PSTAR Practice Test · Question

Scenario 46: Which instrument uses the venturi effect to display the aircraft's speed relative to the air?

The Airspeed Indicator measures the dynamic pressure caused by the aircraft's movement through the air, which is sensed through the pitot tube and static port.

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Question: Scenario 46: Which instrument uses the venturi effect to display the aircraft's speed relative to the air?

Answer options:

  • Altimeter
  • Vertical Speed Indicator (VSI) ✅ Airspeed Indicator
  • Turn Coordinator

Correct answer: Airspeed Indicator

Explanation: The Airspeed Indicator measures the dynamic pressure caused by the aircraft's movement through the air, which is sensed through the pitot tube and static port. While the Venturi tube creates a pressure difference based on airflow, the pitot-static system is the direct mechanism for the ASI. The correct answer is "Airspeed Indicator". This capacity-fill scenario 46 reinforces the same competency for the pstar bank and follows the certified explanation standard.

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