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21 December, 15:25

What is the sequence of energy transformations associated with a hydroelectric dam?

electrical energy into mechanical energy into kinetic energy into gravitational potential energy

gravitational potential energy into kinetic energy into mechanical energy into electrical energy

chemical energy into kinetic energy into mechanical energy into electrical energy

chemical energy into thermal energy into kinetic energy into electrical energy

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Answers (2)
  1. 21 December, 16:11
    0
    gravitational potential energy into kinetic energy into mechanical energy into electrical energy

    Explanation:

    Hydroelectric dam is used to convert gravitational potential energy stored in water to electrical energy. The water is stored at a height. As the water is releases, the gravitational potential energy converts to kinetic energy. The water is allowed to strike the turbine which starts rotating. Thus, kinetic energy is converted to mechanical energy. The turbine is connected to generator where mechanical energy is converted to electrical energy.

    Thus, the correct sequence of energy transformation is: gravitational potential energy into kinetic energy into mechanical energy into electrical energy
  2. 21 December, 16:56
    0
    Gravitational potential energy - > Kinetic energy - > Mechanical energy - > Electrical energy.

    The water starts up (potential) and flows down (kinetic), the flowing water turns a big wheel (mechanical) which creates electricity (electrical).
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