Power Systems
Stability of a transmission line can be increased by

 shunt reactor
 series capacitor
 both 1 and 2
 shunt capacitor

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Power Systems
A sodium graphite reactors use

  sodium as coolant and graphite as moderator.
 a mixture of sodium and graphite as coolant.
 a mixture of sodium and graphite as moderator.
 sodium as moderator and graphite as coolant.

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Power Systems
An hydro-graph indicates

 the average run off during the period.
 the discharge at any time during the period under consideration.
All of these
 the maximum and minimum run off during the period.

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