Selina Concise Physics Class 10 ICSE Solutions Electrical Power and Household Circuits Selina ICSE Solutions for Class 10 Physics Chapter 9 Electrical Power and Household Circuits Exercise 9(A) 1.At what voltage and frequency is the electric power generated at the power generating station? Solution 1. The electric power is generated at 11 KV, 50Hz at the power generating station. 2.Explain with the aid of a simple diagram, the transmission of electric power from the generating station to your house. Solution 2. At a power generating station, the electric power is generated at 11 kV. From here, the alternating voltage is transmitted to the grid sub-station and stepped up to 132 kV using a step-up transformer. It is then transmitted to the main sub-station where the voltage is stepped down to 33 kV using a step-down transformer and is then transmitted to the intermediate sub-station. At the intermediate sub-station, the voltage is stepped down to ...
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