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Question
In an ideal transformer, an output of 66 kV is required when an input voltage of 220 V is available. If the primary has 300 turns, how many turns should the secondary have?
Solution
`E_p = 220 V `
`E_p = 66 kV = 66 xx 10^3 V`
`N_p = 300 (E_p)/(E_s) = (N_p)/(N_s)`
Ns = Number of turn in secondary
⇒ `220/(66xx10^3) = 300/(N_s)` ⇒ Ns = 90000 turns
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