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Explain the use of transformer for distr...

Explain the use of transformer for distribution of power over long distances.

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Transformers are used

Shown below is a container that is used in the transportation of goods over long distances These containers are made of steel. Which property of steel is mainly used to make these containers?

Transformer is used to

Knowledge Check

  • Shown below is a container that is used in the transportation of goods over long distances These containers are made of steel. Which property of steel is mainly used to make these containers?

    A
    its ductility
    B
    its malleability
    C
    its metallic lustre
    D
    its electrical conductivity

  • Figure : Long distance power transmissions The large-scale transmission and distribution of electrical energy over long distances is done with the use of transformers. The voltage output of the generator is stepped-up. It is then transmitted over long distances to an area sub station near the consumers. There the voltage is stepped down. It is further stepped down at distributing sub-stations and utility poles before a power supply of 240 V reaches our homes. We need to step-up the voltage for power. transmission, so that:

    A
    The currentis reduced and consequently, the `I^(2)R` loss is cut down
    B
    The voltage is increased, the power losses are also increased
    C
    The power is increased before transmission is done
    D
    The voltage is decreased so `(V^(2))/(R)` losses.are reduced

  • Figure : Long distance power transmissions The large-scale transmission and distribution of electrical energy over long distances is done with the use of transformers. The voltage output of the generator is stepped-up. It is then transmitted over long distances to an area sub station near the consumers. There the voltage is stepped down. It is further stepped down at distributing sub-stations and utility poles before a power supply of 240 V reaches our homes. A power transmission line feeds input power. at 2300 V to a step down transformer with its primary windings having 4000 turns. The number of turns in the secondary in order to get output power at 230 V are :

    A
    4
    B
    40
    C
    400
    D
    4000