Power Systems
In a Gauss Seidel load flow method, the number of iterations may be reduced if the correction in voltage at each bus is multiplied by

 Gauss constant
 Lagrange multiplier
 Blocking factor
 Acceleration factor

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Power Systems
In hydroelectric power plants

  operating cost is low and initial cost is high.
 both operating and initial cost are high.
 operating cost is high and initial cost is low.
 both operating and initial cost are low.

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