While conducting the flow measurement using at triangular notch, an error 2% in head over the notch is observed. The percentage error in the computed discharge would be

+7%

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-3%

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+5%

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-4%

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Solution

The correct option is C +5%
(c)
$\frac{d Q}{Q} = \frac{5}{2} \frac{d H}{H} = \frac{5}{2} \times 2 = + 5 %$

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While conducting the flow measurement using at triangular notch, an error 2% in head over the notch is observed. The percentage error in the computed discharge would be

The correct option is C +5%(c) dQQ=52dHH=52×2=+5%

The correct option is C +5%
(c)
$\frac{d Q}{Q} = \frac{5}{2} \frac{d H}{H} = \frac{5}{2} \times 2 = + 5 %$