The phenomenon of sudden rise in pressure in the pipe is known as
- Apressure rise
- Bwater hammerCorrect
- Cstream function
- Dhydraulic gradient
Solution
Concept
Water hammer
Step-by-step solution
1. Sudden stoppage of flow by closing a valve produces pressure waves, called water hammer.
Explanation
Water hammer is the sudden increase of pressure in a pipe due to a rapid change in the velocity of flow.
Why the other options are wrong
Stream function and hydraulic gradient are unrelated concepts.
Shortcut
Sudden valve closure → water hammer.
Common mistake
Choosing a generic term.
Correct answer: B) water hammer