ME 360 Midterm: ME 360 Alabama Test1 Spring07
Document Summary
Part 1: closed book, closed notes (this page of the test) Low pass filters cause a measurable phase shift at input frequencies above the break frequency. With normally distributed data, less than 80% of the data will fall between the mean value and the mean value 2 . Passive filters always reduce the amplitude of the output signal compared to the input signal. Low input impedance is desirable in measuring devices, since they will draw very little current from the measured system. The minimum gain for an inverting op-amp circuit is 1. Error bars are placed on plots of experimental data to indicate the uncertainty associated with each measurement. Range is the difference between the minimum and maximum inputs that produces a valid output. Accuracy is the difference between true and measured values. Resolution is the difference among repeated measurements of the same quantity. Precision is the change in output per change in input (slope of output vs. input line).
