🔍 Key Concepts

• Fail-safe design of electric cargo winch brakes when power is lost • Difference between automatic braking and manually applied braking systems • What happens to electromagnetic brakes when electrical power is removed

💭 Think About

• If the power suddenly fails with a heavy load suspended, what feature must act immediately and without human action to hold the load? • Which of these choices would be designed to engage when power is lost, rather than when power is applied? • Think about normal operation: is the brake holding on when the winch is stopped, or only when it is running? What must happen to that brake when power is cut?

✅ Before You Answer

• Identify which device works automatically on loss of power rather than needing an operator to move it. • Eliminate any option that would depend on the operator reacting quickly during an unexpected blackout. • Consider which system is commonly described as a fail-safe brake on electric winches.