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- Q615 - Electrical, Electronic, & Control Engineering
195. The turns ratio of the tapped step-down transformer shown in figure «C» of the illustration is four to one and all taps are evenly spaced. If 120 volts were applied to terminals «H1» and «H3», what would appear at «X1» and «X2»
The voltage between X1 and X2 is 15 volts because the applied voltage energizes two of three primary sections, resulting in 60 volts across one section, which is then divided by the 4:1 turns ratio.
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