What device converts DC to AC to operate A.C. gyro instruments?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What device converts DC to AC to operate A.C. gyro instruments?

Explanation:
AC gyro instruments run on alternating current, but the aircraft’s electrical system is typically direct current. An inverter provides the needed conversion, taking DC from the battery or DC bus and producing AC at the proper voltage and frequency (usually 400 Hz in aircraft power systems) to operate those gyros. Without this converter, the AC-powered instruments wouldn’t function from a DC supply. The other items aren’t power converters or related to powering gyros: isogonic lines relate to magnetic variation, jet route is a flight path, and IVSI is an instrument measuring rate of climb/descent, not a power converter.

AC gyro instruments run on alternating current, but the aircraft’s electrical system is typically direct current. An inverter provides the needed conversion, taking DC from the battery or DC bus and producing AC at the proper voltage and frequency (usually 400 Hz in aircraft power systems) to operate those gyros. Without this converter, the AC-powered instruments wouldn’t function from a DC supply.

The other items aren’t power converters or related to powering gyros: isogonic lines relate to magnetic variation, jet route is a flight path, and IVSI is an instrument measuring rate of climb/descent, not a power converter.

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