Power Systems
The VSWR of transmission line is

 Directly proportional to voltage minimum and inversely proportional to voltage maximum.
  Directly proportional to load impedance and inversely to characteristic impedance.
 Directly proportional to characteristic impedance and inversely to load impedance.
 Proportional to load and characteristic impedance.

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Power Systems
In boiler water reactor (BWR)

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

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