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?

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

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Power Systems
An hydro-graph indicates

All of these
 the maximum and minimum run off during the period.
 the average run off during the period.
 the discharge at any time during the period under consideration.

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