| Question #592 | |
|---|---|
| Link to Question | |
| 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 | |
| Posted: 29 Dec 2014 17:56 UTC | Post #1 |
|---|---|
| sailorpip Deck & Engine |
Registered Total Posts: 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? | |
| Posted: 08 Oct 2015 00:50 UTC | Post #2 |
| maritimesailor Engine |
Member Total Posts: 4 |
| The Answer here is 832 Volts. Does anyone maintain this website? | |
| Posted: 10 Oct 2015 11:19 UTC | Post #3 |
| Shawn Deck & Engine |
Expired Member Total Posts: 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. |
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| Last edited: 10 Oct 2015 13:50 MDT by Shawn | |
| Posted: 25 Jan 2021 20:20 UTC | Post #4 |
| scrubbyj427 Engine |
Member Total Posts: 7 |
| how is this answer of 480 achieved? can someone show the math? | |
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