High voltage transmission lines in Punjab are used to:

Carry electricity over long distances
Connect power plants to substations
Distribute electricity to consumers
All of the above

The correct answer is: d) All of the above

High voltage transmission lines are used to carry electricity over long distances, connect power plants to substations, and distribute electricity to consumers.

  • High voltage transmission lines are used to carry electricity over long distances because they are more efficient than lower voltage lines. The higher the voltage, the less current is required to carry the same amount of power. This means that high voltage transmission lines can carry more power with less loss.
  • High voltage transmission lines connect power plants to substations. Substations are used to step down the voltage from the high voltage transmission lines to a lower voltage that can be used by consumers.
  • High voltage transmission lines distribute electricity to consumers. The lower voltage from the substations is distributed to consumers through a network of distribution lines.

High voltage transmission lines are an essential part of the electricity grid. They allow electricity to be generated at power plants and distributed to consumers over long distances.