Question

The flow in a river is 1500 cumecs. A distorted model is built with horizontal scale of 1/150 and vertical scale of 1/25. The flow rate in the model should be

• A. 0.04 $m^3/s^{-1}$
• B. 0.06 $m^3/s^{-1}$
• C. 0.08 $m^3/s^{-1}$
• D. 0.10 $m^3/s^{-1}$

Answer 1

The correct option is C 0.08 $m^3/s^{-1}$

$Flowrate,Q_r=\left(L_r{)}_H\right(L_r{)}_v^{3/2}\therefore \frac{Q_p}{Q_m}=150\times (25{)}^{3/2}{Q}_m=\frac{1500}{150\times 125}=0.08m^3/sec$