Question

Consider the following statements regarding specific energy of the flow in an open channel

Which of these statements is/are correct?

• A. 1 only
• B. 2 and 3 only
• C. 1 and 2 only
• D. 1, 2 and 3

Answer 1

The correct option is B 2 and 3 only

Critical flow occurs when specific energy and specific force are minimum and discharge is maximum.
Alternative depths are depths with the same specific energy.
There can be many specific energy curve for a given channel as it depends on the depth of flow.