Power Systems
The Gauss Seidel load flow method has following disadvantages. Which of the following statement is wrong?

 Slow convergence
 Unreliable convergence
 Choice of slack bus affects the convergence
 A good initial guess for voltages is essential for convergence

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Power Systems
The factor affecting run off are

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

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Power Systems
Critical mass is

 maximum mass of fissionable material required to sustain a chain reaction.
 a mass of fissionable material required to stop a chain reaction.
 none of these.
  minimum mass of fissionable material required to sustain chain reaction.

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