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Power Systems

Power Systems
Reflector of a nuclear reactor are made up of

 cast iron.
  beryllium.
 steel.
  boron.

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Power Systems
Which of the following statements are true?

 Bus impedance matrix is a full matrix
 Bus admittance matrix is a sparse matrix
 nether 1 nor 2
 both 1 and 2

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Power Systems
Pin insulators are used up to

 any voltage level
 11 kV
 33 kV
 120 kV

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Power Systems
For n bus power system size of Y bus matrix is

 (n-2)×(n-2)
 (n-1)×(n-2)
 n×n
 (n-1)×(n-1)

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Power Systems
Which of the following represents the sag(S) of a transmission line?

 S = wl²/16T
 S = wl²/4T
 S = wl²/2T
 S = wl²/8T

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Power Systems
Nuclear fission means

  combination of two light nuclei.
  breaking up of nuclear of heavy atoms into nearly equal parts.
  graphite.
  moderator.

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