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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The number of buckets on the periphery of a Pelton wheel is given by

(D/2d) + 15
(D/2d) + 20
(D/2d) + 5
(D/2d) + 10

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Hydraulics and Fluid Mechanics in ME
The Reynold's number of a ship is __________ to its velocity and length.

Inversely proportional
None of these
Square root of velocity
Directly proportional

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Hydraulics and Fluid Mechanics in ME
Principle of similitude forms the basis of

designing models so that the result can be converted to prototypes
hydraulic designs
comparing two identical equipments
comparing similarity between design and actual equipment

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Hydraulics and Fluid Mechanics in ME
Barometer is used to measure

Very low pressure
Difference of pressure between two points
Atmospheric pressure
Pressure in pipes, channels etc.

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Hydraulics and Fluid Mechanics in ME
High specific speed of turbine implies it is

Propeller turbine
Impulse turbine
Francis turbine
None of the listed here

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Roynolds number is

less than 4000
less than 2000
more than 4000
between 2000 and 4000

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