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The turn coordinator differs from the older turn-and-slip indicator in that the turn coordinator

Choices

uses GPS for turn rate.
GPS isn't part of the gyro instrument.
✓ is mounted at a slight angle so it senses both ROLL RATE and YAW RATE.correct
The turn coordinator's gyro is canted, so it senses both roll rate and yaw rate, providing earlier indication of bank initiation. The older turn-and-slip senses only yaw. Turn coordinator's gimbal axis is canted ~30° (rather than vertical), so it senses roll rate as well as yaw rate. This means it deflects as the bank STARTS, giving a faster indication. Older turn-and-slip indicators wait until yaw develops, lagging slightly. Both still show standard rate marks (one needle-width or specific tick marks).
is electric only.
Both can be electric or vacuum.
doesn't show standard rate marks.
Both have standard rate marks.

Why

The turn coordinator's gyro is canted, so it senses both roll rate and yaw rate, providing earlier indication of bank initiation. The older turn-and-slip senses only yaw. Turn coordinator's gimbal axis is canted ~30° (rather than vertical), so it senses roll rate as well as yaw rate. This means it deflects as the bank STARTS, giving a faster indication. Older turn-and-slip indicators wait until yaw develops, lagging slightly. Both still show standard rate marks (one needle-width or specific tick marks).

FAA source: PHAK Ch 8; PHAK Chapter 8 — Flight Instrumentsbrowse the reference library →

Covered in Supplemental · VIII — Basic Instrument Maneuvers — study the lessons free, then practice with grading and mastery tracking.

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Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question. Reviewed by a panel of three CFIs + AI review.