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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

9.75 m/sec²
9.81 m/sec²
10 m/sec²
9 m/sec

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Hydraulics and Fluid Mechanics in ME
The flow ratio in case of Francis turbine varies from

0.15 to 0.3
0.6 to 0.9
0.4 to 0.5
1 to 1.5

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Hydraulics and Fluid Mechanics in ME
The speed of a turbine runner is

Directly proportional to H3/2
Directly proportional to H1/2
Inversely proportional to H3/2
Inversely proportional to H1/2

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Hydraulics and Fluid Mechanics in ME
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)

(1 + cos φ)/2
(1 + sin φ)/2
(1 - cos φ)/2
(1 - sin φ)/2

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Hydraulics and Fluid Mechanics in ME
A one dimensional flow is one which

involves zero transverse component of flow
takes place in straight lines
is steady uniform flow
is uniform flow

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Hydraulics and Fluid Mechanics in ME
The coefficient of viscosity may be determined by

Capillary tube method
Rotating cylinder method
All of these
Orifice type viscometer

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