SSC JE Mechanical Engineering 2014 Set 1 Paper

Question : 175 of 200

Marks: +1, -0

The friction head lost due to flow of a viscous fluid through a circular pipe of length L and diameter d with a velocity v and pipe Fanning friction factor f is

${4\f\l}/d . v^2/{2g}$
${4\f\l}/{πd ^2}. v^2/{2g}$
$v^2/{2g}$
${4\f\l}/{πd } . v^2/{2g}$

Validate

Solution:

Friction head loss

h_\f= {4\f\l v^2}/{2gd}

where

\l

= length of pipe
d = diameter of pipe
f = pipe fanning friction factor

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