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

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Hydraulics and Fluid Mechanics in ME
Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.

Different
Ratio
Sum
Product

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Hydraulics and Fluid Mechanics in ME
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)

0.223 R
0.707 R
0.423 R
0.577 R

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

N/√H
N/H3/2
N/H²
N/H

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of liquids
specific gravity of solids
relative humidity
specific gravity of gases

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Hydraulics and Fluid Mechanics in ME
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by

[(Vr + v) v]/ Vr
[2(Vr + v) v]/ Vr²
[2(Vr - v) v]/ Vr²
[(Vr - v) v]/ Vr

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