Point Loss description

$2$ Sharp$-$edged exit from reservoir

$2->3$ L $=150$ m; pipe type a; D $=20$ cm

$3$ Bend radius twice the respective pipe diameter

$3->4$ L $=250$ m; pipe type a; D $=20$ cm

$4$ Sudden pipe contraction

$4->5$ L $=200$ m; pipe type b; D $=10$ cm

$5$ Bend radius twice the respective pipe diameter

$5->6$ L $=75$ m; pipe type b; D $=10$ cm

$6$ Sudden pipe expansion

$6->7$ L $=100$ m; pipe type c; D $=30$ cm

$7$ Sudden pipe contraction

$7->8$ L $=200$ m; pipe type b; D $=10$ cm

$8$ Sharp$-$edged entrance to reservoir

In this system, the design discharge is $0\mathrm{.}05$m$3/$s$,$ and the water temperature is $20\backslash$deg C$.$

$($a$)$ Calculate the water surface elevation at point $9.$

$($b$)$ Calculate the pressure at point X$,$ located between points $6$ and $7(70$ m from $6,$ ZX $=125$ m$).$

$($c$)$ Develop an operation curve of the system by plotting Q in relation to $$Z$.$ If you wanted to convey

Q $=0\mathrm{.}13$m$3/$s through the system, what would the required pump head be$?($i$.$e$.,$ the additional

pressure head caused by the presence of a pump$)$