If a transformer has more turns on the primary than on the secondary, what is the expected voltage relationship?

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Prepare for the Electrical Academy Level 1 Test. Study with multiple choice questions, flashcards, and detailed explanations. Assess your knowledge and ace the exam!

Multiple Choice

If a transformer has more turns on the primary than on the secondary, what is the expected voltage relationship?

Explanation:
Voltage in a transformer follows the turns ratio: Vp/Vs = Np/Ns. If the primary has more turns than the secondary, the ratio Np/Ns is greater than one, so the primary voltage is higher than the secondary voltage. This makes it a step-down arrangement, where the voltage decreases from primary to secondary while power is roughly preserved (so the secondary current increases correspondingly). The basic relationship depends on the turns, not the frequency, in an ideal transformer.

Voltage in a transformer follows the turns ratio: Vp/Vs = Np/Ns. If the primary has more turns than the secondary, the ratio Np/Ns is greater than one, so the primary voltage is higher than the secondary voltage. This makes it a step-down arrangement, where the voltage decreases from primary to secondary while power is roughly preserved (so the secondary current increases correspondingly). The basic relationship depends on the turns, not the frequency, in an ideal transformer.

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