Power Systems
Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses?

 105.2
 85.5
 95.5
 102.5

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Power Systems
Half life is defined as

  the time required for one half of isotope to decay.
 the time required to spiliting of a heavy nucleus.
 the time required for full of atoms in a specimen disintegrate.
 none of above.

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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

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

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