Power Systems
An ACSR conductor has a diameter of 2 cm has internal inductance of 0.05 mH/Km. If this ACSR is replaced with another having a diameter of 4 cm then its internal inductance is

 0.025 mH/Km
 0 mH/Km
 0.05 mH/Km
 0.1 mH/Km

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Power Systems
The draft tube is provided to

None of these
 raise the water surface of the stream to create an artificial head.
 reduce the effect of water hammer.
  increase the acting head on the water wheel.

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