A power transformer has 100 turns for N_P and 5 turns for N_S. What is the turns ratio? How much is the secondary voltage V_S with a primary voltage of 120 V?
Question 18.12: A power transformer has 100 turns for NP and 5 turns for NS....
The turns ratio is {100}/{5}, or 20: 1. The secondary voltage is stepped down by a factor of {1}/{20}, making V_S equal to {120}/{20}, or 6 V.
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