Power Systems
A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line?

 (0.5 + j1 ) pu
 (2 + j4 ) pu
 (4 + j8 ) pu
 (1 + j2 ) pu

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Power Systems
Which of the following statements is/are true? The elements of each row of a Y bus matrix for load flow studies in power system add up to zero

 if both 2 and 3 are satisfied
 always
 if the shunt admittances at the buses are ignored
 if the mutual couplings between transmission lines are absent

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Power Systems
ACSR means

 all conductor steel reinforced
 Aluminium copper steel reinforced
 Aluminium conductor steel reinforced
 Aluminium core steel reinforced

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