Answer & Solution
Answer: Option
B
Solution:
In fluid mechanics, when the flow parameters (like velocity, pressure, etc.) at any given instant remain constant at every point in the flow, the flow is referred to as steady. Let’s analyze the options:
Option A: quasi static → Incorrect. Quasi-static refers to processes that are almost in equilibrium, but not exactly steady or unchanging. It is more related to slow, reversible processes rather than the condition where flow parameters remain constant.
Option B: steady state → Correct. In steady-state flow, the velocity and other flow parameters do not change with time at any given point in the fluid. This means that the flow is time-independent at every location.
Option C: laminar → Incorrect. Laminar flow refers to a flow regime where fluid moves smoothly in layers, without turbulence. However, laminar flow does not necessarily imply that the flow parameters are constant at every point in time.
Option D: uniform → Incorrect. Uniform flow means the flow parameters are the same throughout the entire flow field at any given instant, but it does not specifically imply that these parameters remain constant over time. It only implies spatial uniformity, not temporal steadiness.
Thus, the correct answer is Option B: steady state, as it describes the condition where flow parameters remain the same at every point, with no change over time.
