Question: A sharp - crested triangular weir with a notch angle of 8 6 is used to measure the discharge rate of water from a large

A sharp-crested triangular weir with a notch angle of 86 is used to measure
the discharge rate of water from a large lake into a spillway. If a weir with half
the notch angle (=43) is used instead, determine the percent reduction in
the flow rate. Assume the water depth in the lake and the weir discharge
coefficient remain unchanged.
The percent reduction in the flow rate is
A sharp - crested triangular weir with a notch

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