If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power，which will occur?（）

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

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更多“If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power，which will occur?（）”相关的问题

第1题

[] Bonding cables are used during cargo transfer to（）.

A、A.provide safe electrical power connection to barge equipment B、B.keep the vessel from surging excessively C、C.prevent an accidental discharge of static electricity D、D.secure the cargo hose to a hatch when loading overall

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第2题

[单选题] If you must make an electricity connection in a poorly accessible spot, solder it and seal it against （）

A、metal B、wood C、water D、plastic

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第3题

[单选题] Which device is designed to automatically hold the load if power should fail to an electric winch?（）

A、Pneumatic brake B、Electromagnetic brake C、Hand brake D、Motor controller

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第4题

[单选题] Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.

A、only when fully loaded B、if one or more tanks are full C、when transferring cargo D、only when the barge is being towed

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第5题

[单选题] If the electric motor driving an air compressor fails to start, the cause may be a （）.

A、leaking unloader B、tripped circuit breaker C、control line leak D、defective pop valve

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第6题

[单选题] You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE? （）

A、Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleaned B、The hoses to portable cleaning machines should be disconnected before the machines are removed from the tank C、The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residue D、Steam cleaning and water washing are both capable of generating electrostatic charges within a tank