Turbine producing current - Ohmic heating

In summary, turbines are machines that convert the energy of a moving fluid into mechanical energy, which can then be used to produce current. They do this by using a rotor connected to a generator, which produces electricity. Ohmic heating, also known as Joule heating, is used in turbines to heat up the conductor in the generator, helping to maintain the continuous flow of current. The benefits of using turbines for current production include being a renewable energy source, having low operational costs, being environmentally friendly, and being able to be used in remote locations.
  • #1
soul5
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Homework Statement


The turbine produces current that is at 12kV. To lessen the problem of Ohmic heating, a transformer steps up the voltage to 138kV for power line tranmission.


Homework Equations



Np/Ns=Vp/Vs

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  • #2
Are you supposed to find the turns ratio of the transformer?
 
  • #3


This statement is discussing the use of a transformer to step up the voltage from 12kV to 138kV in order to reduce the effects of Ohmic heating. Ohmic heating is a phenomenon where the resistance in a conductor causes it to heat up when an electric current passes through it. By increasing the voltage, the current can be decreased, thereby reducing the heating effect. This is due to the relationship between voltage, current, and resistance, as described by Ohm's law (V=IR). The equation provided in the statement is the turns ratio equation for a transformer, which shows the relationship between the number of turns in the primary and secondary coils and the voltage in each. By increasing the voltage with a transformer, the current can be reduced and the problem of Ohmic heating can be mitigated. This is an important consideration in power line transmission to ensure efficient and safe delivery of electricity.
 

What is a turbine?

A turbine is a machine that converts the energy of a moving fluid (such as water, steam, or air) into mechanical energy by turning a rotor.

How does a turbine produce current?

A turbine produces current by using the mechanical energy from the moving fluid to turn a rotor, which is connected to a generator. The rotation of the rotor in the generator produces electricity, which can then be used as current.

What is Ohmic heating?

Ohmic heating, also known as Joule heating, is the process by which an electric current passes through a conductor and produces heat. This occurs because the resistance of the conductor causes the electrical energy to be converted into heat.

How is Ohmic heating used in turbines?

In turbines, Ohmic heating is used to heat up the conductor in the generator, which in turn produces the mechanical energy needed to rotate the rotor and generate electricity. This heating effect helps to maintain the continuous flow of current in the turbine.

What are the benefits of using turbines for current production?

Using turbines for current production has several benefits. Turbines are a renewable energy source, as they use the natural flow of water, wind, or steam to produce energy. They also have low operational costs and do not produce any emissions, making them environmentally friendly. Additionally, turbines can be used in remote locations, making them a versatile option for electricity production.

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