Q$3)$ An apparatus for validating Bernoulli's theorem is show below. The diameters at $A,B,C,$ and $D$ are $0\mathrm{.}2,0\mathrm{.}15,0\mathrm{.}15,$ and $0\mathrm{.}08m,$ respectively. At $D,$ the tube is exposed to atmosphere. The setup uses water for demonstration. The flow direction is given by arrows.

Q$3-$i$)$ Calculate flowrate through the apparatus.

$[4$ Marks$]$

Q$3-$ii$)$ Calculate velocity of water at $A,B,$ and $D.$

Q$3-$iii$)$ Calculate the water level in the piezometer at B$.$

$[3$ Marks$]$

$23-$iv$)$ Calculate the gage pressure at $C.$

$[4$ Marks$]$

$[4$ Marks$]$