Power Systems
Which of the following is/are the disadvantages of phase modifiers?

All of these
 It requires more maintenance because of running equipment
 Initial cost of synchronous phase modifier is higher
 It consumes both active and reactive power

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Power Systems
The factor affecting run off are

 amount of vegetation and weather condition in the catchment area.
 rain fall pattern, shape and size of catchment area.
 the topography and nature of soil in the catchment area.
  all of above.

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