Question 395Electricity/Electronics - Assistant Engineer70% to pass
In the illustration of the one-line distribution system diagram, if the ship's service generator on line fails, what statement is true concerning the operation of the emergency diesel- generator? Illustration EL-0014
AI Explanation
The correct answer is B.
When the ship's service generator on line fails, the emergency diesel-generator will automatically start and automatically supply power to the 450 VAC section of the emergency bus through the automatic bus transfer device. This is because the emergency diesel-generator is designed to provide backup power to the emergency electrical system, which includes the emergency bus, in the event of a failure of the primary power source.
The other options are incorrect because: A) the emergency diesel-generator does not supply power to the main bus, but rather to the emergency bus; C) the automatic bus transfer device does not need to be manually shifted to 'Emergency Power' as it is designed to do this automatically; and D) the emergency diesel-generator does not need to be manually started, as it will automatically start in the event of a failure of the ship's service generator.
Related Questions
#393 According to 46 CFR, Subchapter J (Electrical Engineering) regulations, receptacle outlets at or above what voltage are required to have grounding poles? #394 According to 46 CFR 111.75-5, what would be the maximum amperage load on circuit No.2 #396 Upon failure of the normal power supply, how is the emergency generator placed on the line to feed power to the emergency bus? #397 What is a purpose of the automatic bus transfer device shown in the illustration? Illustration EL-0014 #398 Referring to the containership one-line distribution diagram shown in the illustration, what statement is true concerning the battery charger? Illustration EL-0014