An equipment catalog boasts that a pressure transducer system. There are two candidate models to choose from: Model A or Model B. The resolution of Model A is 0.01 kPa while that of Model B is 0.001 kPa. Model B costs substantially more. Both units are otherwise identical. The specifications list the uncertainties for three elemental errors: Linearity error 0.15% FSO
Hysteresis error 0.20% FSO
Sensitivity error 0.25% FSO
For a full-scale output (FSO) of 20 kPa, calculate the design-stage uncertainties for both models. Which model with you select? Explain.

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)?