Fluid Mechanics
Path followed by water jet issuing from the bottom of a water tank will be a

Parabola (vertex being at the opening)
Zig-zag path (which is geometrically undefined)
Hyperbola
Horizontal straight line

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Fluid Mechanics
Vane anemometer

Rotates an element at a speed determined by the velocity of the fluid in which the meter is immersed
Is an area meter
None of these
Is a variable head meter

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