Hydraulics and Fluid Mechanics in ME
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity

One-third
One-half
Three-fourth
Two-third

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Hydraulics and Fluid Mechanics in ME
Two dimensional flows occurs when

The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane
The magnitude and direction of the velocity do not change from point to point in the fluid
The direction and magnitude of the velocity at all points are identical
The velocity of successive fluid particles, at any point, is the same at successive periods of time

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