(Solved): Q2:Explain the basic principle of extracting velocity data from position sensors. Q3:There are fou ...

Q2:Explain the basic principle of extracting velocity data from position sensors. Q3:There are four types of photodetectors are in general use: photo resistors, photodiodes, photo transistors, and photovoltaic cells. Draw the interface circuit for each type and explain their working principles. Q4: Explain the working principle of Hall-effect proximity sensor. Q5: Explain the working principle of capacitor sensor to measure distance? Q6: Explain the working principle of inductive sensor to measure distance? Q7: Compare an LVDT with a potentiometer as a position sensor. What are some advantages and disadvantages of using an LVDT? Q8: An absolute optical rotary encoder has five tracks. How many bits is the output, and what is the resolution in degrees per state. Q9: A CK20-B tachometer is being used in a system. The output is \( 1.5 \mathrm{~V} \). What is the velocity in rpm? Q10: The following is a therapy assisting device for evidence based, repetitive exercises of the upper extremity. Simply, the patient holds the handles and moves the handle bar forward and backward. Every time the handle bar reaches stoppers, the counter-increment increase the value of one. What possible sensors can be attached to the device, providing the counter the reaching information?