A step down transformer converts a voltage of 2200 V into 220 V in the transmission line. Number of turns in primary coil is 5000. Efficiency of transformer is 90% and its output power is 8kW. Calculate (i) number of turns in secondary coil (ii) input power.

Explanation

To solve the problem step by step, we will follow the given information and apply the relevant formulas.

### Given:
- Primary voltage, \( V_P = 2200 \, V \)
- Secondary voltage, \( V_S = 220 \, V \)
- Number of turns in primary coil, \( N_P = 5000 \)
- Efficiency, \( \eta = 90\% = 0.9 \)
- Output power, \( P_{out} = 8 \, kW = 8000 \, W \)
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