A short transmission line connects a step-up transformer on the source side with a series impedance of j0.5 ohms (referred to the primary) to a step-down transformer on the load side with a series impedance of 50 ohms (referred to the primary). The turn ratio of the step-up transformer is 1:14 and a no-load primary voltage of 17 (line-to-line) kV. The step-down transformer has a turn ratio of 18:1 and it has a Y-connected, balanced load of 0.463 +j 0.0772 ohms connected to its secondary side. Assuming an ideal transmission line, the real power absorbed by the load would be:     A. 42 MW   B. None of the other choices are correct   C. 54 MW   D. 37.4 MW   E. 28 MW

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A short transmission line connects a step-up transformer on the source side with a series impedance of j0.5 ohms (referred to the primary) to a step-down transformer on the load side with a series impedance of 50 ohms (referred to the primary). The turn ratio of the step-up transformer is 1:14 and a no-load primary voltage of 17 (line-to-line) kV. The step-down transformer has a turn ratio of 18:1 and it has a Y-connected, balanced load of 0.463 +j 0.0772 ohms connected to its secondary side. Assuming an ideal transmission line, the real power absorbed by the load would be:

 

  A.

42 MW

  B.

None of the other choices are correct

  C.

54 MW

  D.

37.4 MW

  E.

28 MW

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