Fluid Mechanics
Unsteady non-uniform flow is represented by flow through a/an

Expanding tube at increasing rate
Long pipe at constant rate
Expanding tube at constant rate
Long pipe at decreasing rate

ANSWER DOWNLOAD EXAMIANS APP

Fluid Mechanics
A stream line is

Drawn normal to the velocity vector at every point
Fixed in space in steady flow
Always the path of particle
A line connecting the mid points of flow cross-section

ANSWER DOWNLOAD EXAMIANS APP