A vertical Venturi meter is used to measure flow of oil with specific gravity 0.83. The entrance diameter is 4 cm while throat diameter is 2cm. The
pressure difference between inlet and the throat is 173.68 kN/m². if discharge
of oil is 0.017 m³/s, Calculate the difference height between entrance point and throat of the Venturi meter.
Given Coefficient of discharge, Cd =0.92​

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?