Power Systems
For transmission line which one of the following relation is true?

 AD - BC = 1
 AD - BC = 0
 AD - BC = -1
 AD + BC = 0

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Power Systems
An impulse turbine

  operates by initial complete conversion to kinetic energy.
 is most suited for low head and high discharge power plants.
 always operates submerged.
 makes use of a draft tube.

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Power Systems
The VSWR of transmission line is

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

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Power Systems
In boiler water reactor (BWR)

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

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