ECE 111 Final: ECE 111 University of Rochester Final Exam 08

• School: University of Rochester
• Department: Electrical and Computer Engineering
• Course: ECE 111
• Professor: All

Document Summary

This is a closed-book examination, but you may use a hand-held calculator. Write your name on your exam booklet and then do all work in it. Partial credit is more likely to be granted for work that is neat, well-organized, and easy to read. There are eight (8) problems, all weighted equally. Do not overstate or understate the precision of numerical answers. A battery, vdc, and an ac voltage source, vac(t) = vocos( t), are connected to a linear lr circuit as shown below. Find an expression for the total output voltage vout(t). The voltage and current to a linear, passive ac load are v(t) = vo cos ( t) The nominal values and uncertainties of these are: Vo = 100 ( 5) volts, io = 1 ( 0. 03) amps, = 30 ( 5 ). frequency: f = 100 ( 2) hz. Find the nominal, time-average power p delivered to the load and its uncertainty, both in watts. i(t) v(t)