Qutestion $2$

$($a$)$ Give the differences between axial and radial flow pumps

$($b$)$ A centrifugal pump delivers $0\mathrm{.}38\frac{m^3}{s}$ of water against a head of $49$ m with a speed rotation of $750re\frac{v}{m}in.$ Determine the head and discharge at $400$ rev$/$min and the pow required to drive it if the efficiency is $80\%.$