According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, $$l$$ = Length of pipe, v = Velocity of liquid in pipe and d = Diameter of pipe)
A. $$\frac{{{\text{f}}l{{\text{v}}^2}}}{{2{\text{gd}}}}$$
B. $$\frac{{{\text{f}}l{{\text{v}}^2}}}{{{\text{gd}}}}$$
C. $$\frac{{3{\text{f}}l{{\text{v}}^2}}}{{2{\text{gd}}}}$$
D. $$\frac{{{\text{4f}}l{{\text{v}}^2}}}{{2{\text{gd}}}}$$
Answer: Option D
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A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.
A. Steady
B. Streamline
C. Turbulent
D. Unsteady
A hydraulic ram is a device used to
A. Store the energy of water
B. Increase the pressure of water
C. To lift water from deep wells
D. To lift small quantity of water to a greater height when a large quantity of water is available at a smaller height
A. The weight of the body
B. More than the weight of the body
C. Less than the weight of the body
D. Weight of the fluid displaced by the body
it has mentioned Darcy's coefficient instead of friction factor...so that's why multiplied by 4
How??