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| Q. |
In a channel the flow at critical depth occurs when |
| A. | Any changes in depth require more specific energy |
| B. | Hydraulic gradient and slope coincide |
| C. | Specific energy is a maximum for a given discharge |
| D. | Normal depth and critical depth coincide for a channel |
| E. | Vitrified clay. |
| Answer» D. Normal depth and critical depth coincide for a channel | |
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