QUESTION 6

Which of the following statements is incorrect?

a) A streamtube is a series of streamlines drawn through every point on the perimeter of a small

cross-sectional area

b) As streamlines are everywhere parallel to the local velocity, fluid cannot cross a streamtube by

definition

c) Fluid within a streamtube must remain there and cannot cross the boundary of a streamtube

d) Just like streaklines, streamtubes are a time integrated quantity