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An error of 1 in measuring head over the apex of...

This question belongs to Mechanical Engineering Hydraulics And Fluid Mechanics In ME
Hydraulics and Fluid Mechanics in ME
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An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.

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Correct Answer: Option D
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1 Comment
Madhavan Palmani
Madhavan Palmani 7 years ago
Q = K*H^2.5.

On taking logarithm on both sides we get.

ln Q = ln K+2.5*lnH.

Now on differentiating the both sides we get the answer.
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