Industrial Electronics

1 pt. for answer clarity. Was this answer clear, concise, and easy to understand?

• 1 pt. for effort. Was there an appropriate amount of thought and time put into the creation of this answer? That doesn’t necessarily mean a long answer. If a short response answers the question well, it is appropriate. If more detail is required to answer the question well, a longer answer is appropriate.
• The remainder of the points will be awarded for answer accuracy, with multipart questions reflecting a higher potential point total.

On to the questions:

Chapter 6

• What are the primary differences between discrete and analog sensors?
• What is the basic principle of operation for an inductive proximity sensor?
• What is the basic principle of operation for a capacitive proximity sensor?
• Compare the maximum ranges for proximity and photoelectric sensors.
• What are the three primary sensing modes available in photoelectric sensors?

Chapter 7

• What is the difference between hydraulic and pneumatic actuators?
• Explain the operation of a resistive temperature detector.
• Explain the operation and construction of a thermocouple.
• What is the primary advantage of a pyrometer over other temperature sensors?
• Explain the operation of displacement flow sensors.
• Explain the operation of the thermal mass flow sensor.

Chapter 9

• How do you control the magnetic field strength of an electromagnet?
• When is counter EMF produced in a motor?
• How is rotational direction of a DC series motor controlled?
• How is pulse width modulation used to control the speed of a motor?
• Contrast dynamic braking, regenerative braking, and plugging as ways of stopping a DC motor.

Chapter 10

• What is AC motor slip?
• Why would an AC motor have a centrifugal start switch?
• Why is the field generated by a three-phase motor stronger than the field produced by a single phase motor?

Chapter 11

• Describe the operation of a Hall effect sensor.