Engine : Electricity - 592/1386
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| In figure "4" of the diagram in the illustration, the three phase step down power transformer has a turns ratio of five to one. If a three-phase 4160 volt supply is connected to terminals "A1-B1-B2", what voltage should develop across terminals "A2- B2-C2"? Illustration EL-0084 |
| A) 240 volts |
| B) 415 volts |
| C) 480 volts |
| D) 832 volts |
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Illustration EL-0084
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| scrubbyj427 - 2021-01-25 20:20:32 Member (7) |
| how is this answer of 480 achieved? can someone show the math? |
| Shawn - 2015-10-10 11:19:36 Expired Member (195) |
| Maritimesailor, Sorry you disagree with the Coast Guard answer, I can't control that. This is the latest and up-to-date question and answer released by the NMC. Please forward your comments to the NMC at iasknmc@uscg.mil. USCGQ is as up-to-date as much as the NMC can give us. |
| maritimesailor - 2015-10-08 00:50:13 Member (4) |
| The Answer here is 832 Volts. Does anyone maintain this website? |
| sailorpip - 2014-12-29 17:56:38 Registered (4) |
| I didn't know it was even possible to feed both sides of a transformer simultaneously? I don't understand the formula, mechanics, or purpose of connecting to A1-B1-B2, and I also don't see a reference to this question in the USCG Electricity question databank, so perhaps this is a typo? |
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