A....is an imaginary line within the flow so that the tangent at any point on it indicates the velocity at that point.

Related MCQs

• An imaginary line drawn through a flow field such that the tangent at any point gives the velocity vector at an instant is known as
• An imaginary curve drawn through a flowing fluid in such a way that the tangent to it at any point gives the direction of the velocity of flow at that point, is known as
• At point A in a pipe line carrying water the diameter is 1 m, the pressure 98 kPa and the velocity 1 m/s. At point B, 2 m higher than A, the diameter is 0.5 m and the pressure 20 kPa. The direction of flow would be
• The distance from pipe boundary, at which the point velocity is equal to average velocity in case of turbulent flow (when R is the radius of the pipe), is
• In case of turbulent flow of a fluid through a circular tube (as compared to the case of laminar flow at the same flow rate) the maximum velocity is ....., shear stress at the wall is ....., and the pressure drop across a given length is ....., the correct words for the blanks are, respectively
• In turbulent flow the velocity distribution is a function of the distance y measured from the boundary surface and shear friction velocity uf, and follows a
• For a flow between two stationary parallel plates the velocity distribution is parabolic. In this case the mean velocity is equal to
• The ratio of average velocity to mzximum velocity for steady laminar flow in circular pipes is
• ...... is important in compressible fluid flow problems at high velocities, such as high velocity flow in pipes or motion of high-speed projectiles and missiles.
• If one of the walls moves in the direction of flow with uniform velocity while the other wall is stationary, then the resulting flow between parallel walls is called