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The discharge over a stepped notch is affected by

15. The discharge over a stepped notch is affected by:

1. Only the channel width
2. Only the step height
3. Both the step height and the channel width
4. Neither the step height nor the channel width

Answer: C) Both the step height and the channel width

Explanation:

Both the step height and the channel width influence the discharge across a stepped notch. These parameters, along with other factors such as the approach flow conditions, affect the flow rate calculation.