Question $4[10]$

$4\mathrm{.}1.$ An inclined venture with a throat diameter is $50$ mm measures the flow of oil $(SG=0,88)$ in

a $12\mathrm{.}5$ cm diameter pipe. The throat is $30$ cm above the inlet. Take co$-$officiant of discharge

$=0,97$ and calculate: The flow rate of oil if the pressure difference between inlet and throat

is $27\mathrm{.}5$ kPa $.$

$4\mathrm{.}2.$ A tank has a head of water of $1$ m over an orifice with a diameter of $25$ mm $.$ The actual

discharge through the orifice is $57000$ grams per minute. What is co$-$efficient of discharge?