Hydraulics and Fluid Mechanics - Mechanical Engineering Questions and Answers

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The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known aspath line

path line

stream line

steak line

potential line

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A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

\(\frac { 14 n R^\frac{1}{2} } { 15C_d \times a \sqrt{2g}} \)

\(\frac { 14 n R^\frac{3}{2} } { 15C_d \times a \sqrt{2g}} \)

\(\frac { 14 n R^\frac{5}{2} } { 15C_d \times a \sqrt{2g}} \)

\(\frac { 14 n R^\frac{7}{2} } { 15C_d \times a \sqrt{2g}} \)

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Stoke is the unit ofkinematic viscosity in C. G. S. units

kinematic viscosity in C. G. S. units

kinematic viscosity in M. K. S. units

dynamic viscosity in M. K. S. units

dynamic viscosity in S. I. units

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One poise is equal to

0.1 N-s/m²

1 N-s/m²

10 N-s/m²

100 N-s/m²