题目

In the event of a main generating system failure, an emergency supply of electricity is required for essential services. This can be supplied by batteries, but most merchant ships have an emergency generator. The unit is diesel driven and located outside of the machinery space. An emergency generator should be connected to ___.A. emergency batteriesB. main switchboardC. emergency lightsD. emergency switchboard

In the event of a main generating system failure, an emergency supply of electricity is required for essential services. This can be supplied by batteries, but most merchant ships have an emergency generator. The unit is diesel driven and located outside of the machinery space. An emergency generator should be connected to ___.

A. emergency batteries

B. main switchboard

C. emergency lights

D. emergency switchboard

题目解答

答案

D. emergency switchboard

解析

本题考查船舶应急发电机的连接知识。解题思路是根据船舶应急电力系统的工作原理和各部件的功能，分析应急发电机应连接的对象。

  • 首先明确应急发电机的作用是在主发电系统故障时为关键服务提供应急电力。
  • 接着分析各个选项：
    • 选项A：应急电池是应急电源的一种，但应急发电机的主要作用是提供持续的电力，而不是连接到应急电池，所以A选项错误。
    • 选项B：主配电板是主发电系统的一部分，应急发电机是在主发电系统故障时启用的，不应该连接到主配电板，所以B选项错误。
    • 选项C：应急灯只是应急电力系统所供应的众多设备之一，应急发电机不能仅仅连接到应急灯，所以C选项错误。
    • 选项D：应急配电板是专门用于分配应急电力的装置，应急发电机产生的电力需要通过应急配电板分配到各个需要应急电力的关键设备上，所以应急发电机应该连接到应急配电板，D选项正确。