If the flow characteristics such as flow depth and the velocity of flow at any point do not change with respect to time, then it is known as
- Asteady flowCorrect
- Buniform flow
- Claminar flow
- Dcritical flow
Solution
Concept
Definition of steady flow in fluids
Formula
NONE
Step-by-step solution
1. A flow where parameters like velocity and depth do not change with time at a given position is defined as steady flow. Answer: A
Explanation
A flow is defined as steady when flow properties such as depth and velocity at any given point do not change with respect to time. If these parameters change over time, the flow is classified as unsteady. Therefore, option A correctly describes steady flow.
Why the other options are wrong
C) Laminar flow describes fluid moving in smooth, parallel layers without lateral mixing. D) Critical flow occurs when the Froude number equals unity and flow energy is minimized.
Shortcut
Constant with respect to TIME = Steady flow; constant with respect to SPACE = Uniform flow.
Common mistake
Confusing steady flow with uniform flow, which refers to flow characteristics remaining constant along space rather than time.
Correct answer: A) steady flow