Name the device used to (a) increase the voltage at the generating station, and (b) decrease the voltage at the sub station for it's supply.

In what unit does the electric meter in a house measure the electrical energy consumed? What is it's value in S.I. unit?

How should the several electric lamps be connected with the mains so that the switching on or off a lamp has no effect on the operation of other lamps?

(a) At what voltage is the electric power from the generating station transmitted? Give reason to your answer.

(b) What is the nature of current transmitted from the power station?