Power Systems
Inductance of transmission line will decrease when

 GMD increase and GMR decrease
 GMD decrease and GMR increase
 both GMD and GMR increase
 both GMD and GMR decrease

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Power Systems
The draft tube is provided to

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

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