12. Hydraulic depth is the ratio between a) Ratio between flow area and wetted perimeter b) Ratio between flow area and top width c) Ratio between wetted perimeter and top width 13. Subcritical flow...

Extracted text: 12. Hydraulic depth is the ratio between a) Ratio between flow area and wetted perimeter b) Ratio between flow area and top width c) Ratio between wetted perimeter and top width 13. Subcritical flow occurs when: a) Depths are greater than the critical depths b) Depths are smaller than the critical depths c) There will be no alternative depths 14. Which of the following condition is applicable for Hydraulically efficient channel: a) least wetted perimeter for a given area that has the maximum conveyance b) Highest wetted perimeter for a given area that has the maximum conveyance c) Wetted perimeter has no role