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Engine: Electricity

Question 408 of 1,386

If the illustrated device in figure "B" has a step-up ratio of 10 to 1 what voltage would be measured at the secondary shortly after the primary of the device is connected to 110 volts DC with a current of 12 amps? Illustration EL-0055

USCG illustration EL-0055 for Engine Electricity question 408
Illustration EL-0055
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sb sboston · Feb 16, 2017
The ratio is a red herring. Think transient properties of an inductor. A spike in current (connecting the power) will cause a spike in resistance.