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Question: the rotating speed of a variable speed motor is measured...

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The rotating speed of a variable speed motor is measured by a speed sensor (optical encoder). The signal from this sensor can be used to compute the rotating speed from the time period Tdisplayed by an oscilloscope as shown in Figure 20- Periodic signal from optical encoder The measurement data are given in the following table Motor speed n (rpm Period of rotation, 7 (sec) measured by SensorMeasured by Osc 0.252 400 500 0.15 0.122 800 900 1000 103 0.0895 0078 0.0698 0.063 (a) Compute motor speed measured by oscilloscope (b) Evaluate the relative error % (c) Plot the relation between the i/p and op data using the rectangular scales d) Evaluate the linearity emor and the zero drift (e) Detemine the average sensitivity ( Compute the systematic error (uncertainty or accuracy) if the speed measured by optical encoder represents the true value
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