Which device triggers to prevent cable twist if the automatic untwist function fails?

• A. Cable twist device
• B. Emergency brake
• C. Wind speed limiter
• D. Yaw motor lock

Answer: (A)

The important idea is having a backup safety that specifically handles cable twisting. When the automatic untwist function can’t do its job, the device focused on cable twist is designed to kick in and prevent further twisting or damage. This cable twist device acts as a targeted safeguard, stopping or limiting rotation to keep the cable from kink, wear, or breakage.

The other options don’t address twisting directly: an emergency brake stops motion to protect people and equipment, a wind speed limiter limits operation based on environmental conditions, and a yaw motor lock fixes the yaw axis. None of these prevent cable twist, so the dedicated cable twist device is the correct choice.