Power Systems
Aluminium is now most commonly employed conductor material in transmission lines than copper because

 costlier
 it is more conductive
 it is cheaper and lighter
 its tensile strength is more

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Power Systems
The value of off diagonal elements is

 which is connected between bus i and bus j with positive sign
 sum of admittances connected at bus i
 which is connected between bus i and bus j with negative sign
 sum of admittances connected at bus j

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Power Systems
Which of following statement are false

 In nuclear power plants, chain reaction is controlled by cadmium rods.
  Nuclear power plants are used as peak load plants only.
 In a nuclear reactor, multiplication factor is kept almost equal to one.
 A thermal reactor needs a moderator material.

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