Hydraulics and Fluid Mechanics in ME
Francis turbine is best suited for

All types of heads
Medium head application from 24 to 180 m
High head installation above 180 m
Low head installation up to 30 m

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Hydraulics and Fluid Mechanics in ME
A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, theni) the ball will move to the frontii) the bubble will move to the frontiii) the ball will move to the reariv) the bubble will move to the rear Find out which of the above statements are correct ?

(iii) and (iv)
(i) and (ii)
(ii) and (iii)
(i) and (iv)

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Hydraulics and Fluid Mechanics in ME
The purpose of a surge tank is

To regulate flow of water to turbines by providing necessary retarding head of water
To eliminate water hammer possibilities
All of these
To control the pressure variations due to rapid changes in the pipe line flow

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