On an engine throttle control system, the...

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Question 1 of 205eccefa3bacbc34ba4d47e96

On an engine throttle control system, the auxiliary control circuits are provided with devices to prevent excessive over travel of the actuating valve by the control motor. What are these devices commonly called?

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🔍 Key Concepts

• Engine throttle control systems and how actuating valves are positioned • Common industrial/electrical devices used to stop or change motion at end-of-travel positions • Purpose of protective devices that prevent mechanical over‑travel or damage

💭 Think About

• Which of these choices is specifically used to detect when a moving part has reached the end of its allowable travel? • Which devices are normally mounted so they operate at the physical extremes of motion, rather than measuring overlap or electrical difference in current? • Think about standard terminology used on machinery and cargo gear to stop motion at a safe point—what are they usually called?

✅ Before You Answer

• Verify which option is typically mounted at the end of travel of a moving mechanical component. • Eliminate options that mainly relate to electrical protection of circuits rather than mechanical motion limits. • Ask: which device name would you commonly see on cranes, winches, or valve actuators to prevent over‑travel?

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