1. Describe what is meant by accuracy, range and resolution.
2. Give an example of how linear displacement can be measured.
3. A tachometer is connected to a motor shaft in a speed control system. If the tachometer produces 100 mV per revolution, write an expression for its transfer function in terms of volts/radians-per-second.
4. What is polling in software? Describe how a control algorithm can be synchronized using polling.