Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as

Vortex flow
Uniform flow
Turbulent flow
Steady flow

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Hydraulics and Fluid Mechanics in ME
A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

Length of both the pipes is same
Diameter of both the pipes is same
Loss of head and velocity of flow in both the pipes is same
Loss of head and discharge of both the pipes is same

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Hydraulics and Fluid Mechanics in ME
The flow ratio of Francis turbine is defined as the ratio of the

Velocity of runner at inlet to the velocity of flow at inlet
Velocity of flow at inlet to the theoretical jet velocity
None of these
Theoretical velocity of jet to the velocity of flow at inlet

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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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