Power Systems
Maximum power capacity of a transmission line can be increased by

 either 1 or 2
 increasing voltage level
 nether 1 nor 2
 decreasing reactance value

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Power Systems
A thermal power station needs space

  less than that required by hydro-power station of same capacity.
 less than that required by atomic power station of the same output.
 less than that required by the diesel power station of same output.
 less than that required by a gas turbine power plant of same output.

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