Power Systems
The draw back of NR method as compare to Gauss-Seidel method is/are?

 large requirement of computer memory
None of these
 large number of iterations
 both 1 and 2

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Power Systems
A sodium graphite reactors use

 sodium as moderator and graphite as coolant.
 a mixture of sodium and graphite as moderator.
 a mixture of sodium and graphite as coolant.
  sodium as coolant and graphite as moderator.

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