A pump$-$slorage model is sel up as shown in a figure. Water from a lower reservoir is pumped

to an upper reservair with head d Terence $H$ frough a bunnel weth diameler D$.$ Prolotjpe

data is provided as follow.

a$)$ When a transparent acryle ploe with a dameter $0\mathrm{.}30$ m is used as dunnel diameter,

compute $L,Q_{,},V_1$ and those valus of pump capacity $(Q_n),$ Lnneil length $($ T Led$)$

and head difference $(H_3)$ in the model.

b$)$ Then pumping is carted o$.$t in a right time for $3$ hours, what should be the

volume of upper reservor of mocel?

$(3$ matis$)$