Q$\mathrm{.}4)$ A trapezoidal channel has a bed width of $3\mathrm{.}0m$ and a side slope of $1$:$1$ and carries a

discharge of $8\mathrm{.}0\frac{m^3}{s}.$ Construct the momentum diagram. A hydraulic jump is to be formed in

this channel such that the downstream depth is not to exceed $1\mathrm{.}75m,$ Find the limiting value of

the upstream depth. Calculate the head lost.

$($Answers $1\mathrm{.}83m)$