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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a Francis turbine runner, the numbers of blades are generally between

16 to 24
2 to 4
4 to 8
8 to 16

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Hydraulics and Fluid Mechanics in ME
The wake

always occurs before a separation point
None of these
is a region of high pressure intensity
always occurs after a separation point

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Hydraulics and Fluid Mechanics in ME
The velocity distribution for laminar flow through a circular tube

varies parabolically with maximum at the centre
is constant over the cross-section
None of these
varies linearly from zero at walls to maximum at centre

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Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ H
P/ H²
P/ √H
P/ H3/2

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Hydraulics and Fluid Mechanics in ME
A flow through a long pipe at decreasing rate is called __________ uniform flow.

Unsteady
Both A and B
Steady
None of these

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Hydraulics and Fluid Mechanics in ME
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

Double
Three times
Four times
Five times

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