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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Pressure of liquid
Velocity of liquid
Length of mouthpiece
Area of mouthpiece

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Hydraulics and Fluid Mechanics in ME
The angle of contact in case of a liquid depends upon

the nature of the liquid and the solid
any one of the above
both of die above
the material which exists above the free surface of the liquid

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Hydraulics and Fluid Mechanics in ME
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

0.0611 stoke
0.611 stoke
0.0116 stoke
0.116 stoke

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Hydraulics and Fluid Mechanics in ME
Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by

0.1
0.2
0.15
0.05

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Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

(2A√H₁)/(Cd × a√2g)
(2AH₁)/(Cd × a√2g)
(2AH₁3/2)/(Cd × a√2g)
(2AH₁²)/(Cd × a√2g)

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Hydraulics and Fluid Mechanics in ME
A fluid having no viscosity is known as

Non-Newtonian fluid
Newtonian fluid
Real fluid
Ideal fluid

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