Power Systems
If a fault occurs on any feeder, the fault current is

  much higher than with unsectional bus bar.
  none of these.
  much lower than with unsectional bus bar.
  equal to unsectional bus bar.

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Power Systems
In boiler water reactor (BWR)

 the feed water acts both coolant and a moderator.
  all of above.
 there is danger of radioactive contamination of steam.
 enriched uranium is used as fuel.

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