To reduce ohmic (ie heat) losses, long-distance transmission of electrical current takes place through high-voltage inst
Posted: Wed May 18, 2022 6:41 am
To reduce ohmic (ie heat) losses, long-distance transmission of electrical current takes place through high-voltage installations (several hundred kV). Closer to the final receiver, the voltage is reduced down to the 230V effective voltage of the electrical outlet in several steps. In each such step a step-down transformer is used.
a) In the last step, the voltage of 4.14 kV is transformed to 230 V. How many revolutions should the primary coil of the transformer have if the secondary coil has 80 revolutions?
b) Explain why the current transmission under high voltage is advantageous. An A-level explanation must be well formulated and it must contain general connections and a separate example of the reduction of losses during transmission under higher voltage.
a) In the last step, the voltage of 4.14 kV is transformed to 230 V. How many revolutions should the primary coil of the transformer have if the secondary coil has 80 revolutions?
b) Explain why the current transmission under high voltage is advantageous. An A-level explanation must be well formulated and it must contain general connections and a separate example of the reduction of losses during transmission under higher voltage.