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# GATE 2025 Power Systems Evaluation Quiz 8

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Question 1

Which of the following method is used for reducing the interference and noise in the telephone lines?

Question 2

In a 3 phase, 3 wire system the conductors are arranged in a horizontal plane with spacing D13 = 4m, D12=2m=D23. Conductors are transposed having diameter of 2.5cm. The ratio of mutual GMD to self GMD ?

Question 3

Consider a long, two-wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and the distance between their centers is 1m. If this distance is doubled, then the inductance per unit length

Question 4

The three conductor of a 3-phase line are arranged at the corners of a triangle of sides 2 m, 2.5 m and 4.5 m. The inductance per phase per meter, if the diameter of each conductor is 1.24 cm and conductor are regularly transposed is

Question 5

Determine the charging current IC per phase per km of a line operating at 132 kV and conductors are arranged as shown in figure if the radius of each conductor is 1 cm.
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