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Transmission towers are usually made of steel to help support over the head power lines. They are used in high voltage AC and DC systems and can come in different shapes and sizes.

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Why transposition tower in long transmission line?

In transmission line minimum 3 conductors are run in parallel. Every conductor has a flux which produce losses in other conductor which is run with parallel. So in the middle one conductor the losses is double in respect to other two conductors. At the end of the line the voltage of the middle one conductor is reduced from other conductors due to these losses. The transposition tower is used to change the conductors. By using these tower we shift each conductor position. So we use these towers in long transmission line so that these losses becomes equal for each conductor. and voltage will be almost equal at the end of the transmission line. Regards. Vishal kr. Sharma. (Simplex infrastructures ltd, Power Transmission & Distribution division)


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Why use transposition tower in long transmission line?

A 'transposed' tower is one where the vertical sequence of lines on one side of the tower is red-yellow-blue (or A-B-C), while the sequence on the other side is blue-yellow-red (or C-B-A). The effect of this is to introduce some degree of cancellation between the magnetic fields -approximately inversely proportional to the cube of the horizontal distance away from the line, thus reducing the flux density of the magnetic field on either side of the line. In other words, it offers a means of reducing the exposure to the line's electromagnetic field. In the UK, most tower lines are transposed.


How do you calculate height of transmission tower?

To calculate the height of a transmission tower, you can use the formula for the angle of elevation from a known distance. Measure the horizontal distance from the observation point to the base of the tower and the angle of elevation to the top of the tower using a clinometer or theodolite. Then, apply the tangent function: height = distance × tan(angle). Alternatively, you can also use trigonometric methods or tools like GPS for more precise measurements.


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A tv tower has a height of 300 cm . what is the maximum distance up to which this tv transmission can receive?

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