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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Mercury does not wet glass. This is due to property of liquid known as

cohesion
viscosity
adhesion
surface tension

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Hydraulics and Fluid Mechanics in ME
Capillary action is due to the

Surface tension
Cohesion of the liquid
Adhesion of the liquid molecules and the molecules on the surface of a solid
All of the listed here

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Hydraulics and Fluid Mechanics in ME
Centrifugal pump is started with its delivery valve

Kept 50% open
Irrespective of any position
Kept fully open
Kept fully closed

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

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

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Hydraulics and Fluid Mechanics in ME
The meatcentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is

10.4 sec
14.1 sec
4.1 sec
5.2 sec

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Hydraulics and Fluid Mechanics in ME
In case of an airfoil, the separation of flow occurs

midway between rear and front of body
any where between rear and front of body depending upon Reynolds number
at the extreme rear of body
at the extreme front of body

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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