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The primary coil of an ideal step up transformer has 100 turns and the transformation ratio is also 100. The input voltage and the power are 220 V and 1100 W respectively. Calculate (i) number of turns in the secondary (ii) the current in the primary (iii) voltage across the secondary (iv) the current in the secondary (v) power in the secondary. |
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Answer» SOLUTION :It is given that `N_(p) = 100`, transformation ratio `K = 100, V_(p) = 220 V` and `P_("input") = 1100 W` (i) `N_(s) = k, N_(p) = 100 xx 100 = 10000` (ii) `I_(p) = P_("input")/V_(p) -(1100 W)/(220 V) = 5A` (iii) `V_(s) = k, V_(p) = 100 xx 220 = 22000 V` (iv) `I_(s) = I_(p)/k = (5A)/(100) = 0.05 A` (v) Output POWER `= V_(s).I_(s) = 22000 xx 0.05 = 1100 W` |
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