Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage?

 18.18 kV
 -18.18 kV
 -81.82 kV
 81.82 kV

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Power Systems
Which of the following statement is/are true?Zn

 The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit
 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit
 nether 1 nor 2
 both 1 and 2

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