Power Systems
The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

 10.936 pu
 7.936 pu
 8.936 pu
 9.936 pu

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Power Systems
In boiler water reactor (BWR)

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

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