A、A.after torque causes line pull to exceed the rated capacity of the winch
B、B.before the line pull reaches the rated capacity of the winch
C、C.when the line pull reaches the breaking strength of the fall
D、D.before the safe working load of the fall is reached
更多“Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.”相关的问题
A、A.after torque cause line pull to exceed the rated capacity of the winch B、B.before the line pull reaches the rated capacity of the winch C、C.when the line pull reaches the breaking strengh of the fall D、D.before the safe working load of the fall is reached
A、A pawl，forced by a spring mechanism，will engage the teeth of the bull gear and hold the load B、An electromagnetic brake will hold the load where it is suspended C、The load will fall rapidly to the deck unless the foot brake is engaged D、The load will slowly lower to the deck under control of the drag of the winch motor
A、when the line pull reaches the rated winch capacity B、after the line pull exceeds the rated winch capacity C、after a short build-up of torque D、immediately
A、when the line pull reaches the rated winch capacity B、after the line pull exceeds the rated winch capacity C、after a short build-up of torque D、immediately
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