A 2 in. sch 40 pipe is carrying water at a flow rate of $8 \mathrm{gpm}$. The flow rate is measured by means of an orifice with a $1.6 \mathrm{in}$. diameter hole. The pressure drop across the orifice is measured using a manometer containing an oil with an $\mathrm{SG}$ of 1.3.

(a) What is the manometer reading in inches?

(b) What is the power (in $\mathrm{hp}$ ) consumed as a consequence of the friction loss due to the orifice plate in the fluid?