Transformers at the power station __________the voltage before power is transmitted. Transformers at the substations then _________the voltage in stages before the power is supplied to the home, offices and factories.
The _________ the transmission voltage, the ________ the current in the power lines.
The smaller the current, I the smaller the power lost during transmission.
The output voltage from a generator which is usually about ________is increased by a step-up transformer to as high as _________before being supplied to the National Grid Network.