Fluid Mechanics
Which of the following exemplifies a three dimensional fluid flow ?

None of these
Fluid flow at the inlet to a nozzle
Viscous fluid flow between converging plates
Fluid flow between parallel plates

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Fluid Mechanics
A stream line is

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

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Fluid Mechanics
The continuity equation

Stipulates that Newton's second law of motion must be satisfied at every point in the fluid
Relates mass flow rate along a stream tube
None of these
Relates work and energy

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