Question 220Motor Plants - 1st Asst/Chief

The correct answer is D) Electrical limit switch. An electrical limit switch is typically used as a safety feature to satisfy Coast Guard regulations for the unit shown in the illustration MO-0116. Limit switches are designed to automatically cut off or limit the operation of machinery when it reaches a certain predetermined position or point, preventing potential accidents or damage. This helps ensure the safe operation of the equipment and compliance with Coast Guard safety standards. The other options, such as a spring clutch, overrunning clutch, or pneumatic three-position valve, would not be the primary safety feature required by Coast Guard regulations for this specific illustration.