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GATE 2019: Power System Test 4 (App update required to attempt this test)

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Question 1

Calculate the charging current of a 164KV, 60 Hz transmission line with total shunt capacitance per phase of 8μF.

Question 2

Shunt conductance in overhead power transmission lines is primarily due to

Question 3

The nominal- π circuit of a transmission line is shown in the figure.

Impedance Z=100∠80o and reactance X=3300-Ω. The magnitude of the characteristic impedance of the transmission line, in Ω, is _______________. (Give the answer up to one decimal place.)

Question 4

At no-load condition a 3-phase, 50 Hz, lossless power transmission line has sending end and receiving-end voltage of 400 kV and 420 kV respectively. Assuming the velocity of traveling wave to be the velocity of light, the length of the line, in km, is __________.

Question 5

For a 400 km long transmission line, the series impedance is (0.0+j0.5)Ω/kM and the shunt admittance is
(0.0+j5.0)μ℧/kM. The magnitude of the series impedance (in Ω) of the equivalent p circuit of the transmission line is ________.

Question 6

A 500 KV transmission line is transmitting power to the load. Calculate the ideal power transfer capability of transmission line(in MW) if transmission line has per phase line inductance of 1.2mH/km and capacitance of 12 nF/km. (ignore length of the line).
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Feb 17ESE & GATE EE