ATPL 022 Instrumentation Practice Questions - EASA ATPL(A) Theoretical Knowledge - Aircraft General Knowledge Instrumentation (Subject 022) Exam

Which design feature distinguishes an Instantaneous Vertical Speed Indicator (IVSI) from a conventional VSI?

It incorporates accelerometer-operated dashpot pumps to compensate for the inherent lag. It uses two metering choke orifices instead of one. It senses dynamic pressure from the pitot line instead of static pressure. It displays vertical speed digitally rather than with a pointer.

Correct Answer:

It incorporates accelerometer-operated dashpot pumps to compensate for the inherent lag.

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