Question

$\left(i\right)$ Name the device used to increase the voltage at a generating station.
$\left(ii\right)$ At what frequency is A.C. supplied to residential houses?
$\left(iii\right)$ Name the wire in a household electrical circuit to which the switch is connected.

Answer 1

$\left(i\right)$ Transformer is the device used to increase the voltage at a generating station.

It is used for reducing or increasing the voltage of an alternating current.

$\left(ii\right)$ A.C. is supplied to residential houses at the frequency of $50Hz$.

$\left(iii\right)$ In a household electrical circuit, the switch is connected to the live wire. The live wire carries electric current to the appliances at a high voltage.