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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Eight times
Double
Four times
Sixteen times

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Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Guide blade
Inlet of draft rube
Penstock
Blade inlet

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Hydraulics and Fluid Mechanics in ME
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

0.6
0.4
0.3
0.83

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

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

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Hydraulics and Fluid Mechanics in ME
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called

Positive gauge pressure
Gauge pressure
Absolute pressure
Vacuum pressure

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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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