Question

(i) Name the device used to increase the voltage at a generating station. 

(ii) At what frequency is AC supplied to residential houses? 

(iii) Name the wire in a household electrical circuit to which the switch is connected. 

Answer 1

(i) The device used to increase voltage at the generating station is the step-up transformer. 

(ii) The residential houses are supplied with AC of frequency 50Hz. 

(iii) The switch is connected to the live (or phase) wire in a house-hold electric circuit.