Fluid Mechanics
In deriving Bernoulli's equation, fluid is assumed to be

Incompressible, frictionless, steady, along a streamline
None of these
Uniform, steady, incompressible, along a streamline
Steady, density being pressure dependent, frictionless

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Fluid Mechanics
Turbine impeller

Produces only tangential current
Is effective over wide range of viscosities
Produces only radial current
Does not produce tangential current

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