Power Systems
Which of the following represents the transmission or reflection coefficient of voltage Tv? (Zl = Surge impedance of load, Zs = Surge impedance of line)

 (Zl - Zs)/(Zs + Zl)
 2Zs/(Zs + Zl)
 2Zl/(Zs + Zl)
 (Zs - Zl)/(Zs + Zl)

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

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

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