Hydraulics and Fluid Mechanics in ME
Slip of a reciprocating pump is negative, when

Suction pipe is long and delivery pipe is short and the pump is running at high speeds
Delivery pipe is long and pump is running at high speeds
Suction pipe is short and pump is running at low speeds
Suction pipe is short and delivery pipe is long and the pump is running at low speeds

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Hydraulics and Fluid Mechanics in ME
Meta-centric height is given as the distance between

The center of gravity of the body and the center of pressure
Center of buoyancy and metacenter
The center of gravity of the body and the metacenter
The center of gravity of the body and the center of buoyancy

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Hydraulics and Fluid Mechanics in ME
Two dimensional flows occurs when

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
The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

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