Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 1, Problem 4SQ
To determine
Describe about the devices that are used to control motor automatically.
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- Identify and describe the basic functional elements that could be used in closed loop control for the following systems listed below. Include block diagrams for both, and give examples of sensors, controllers and actuators that would be used for both. 1) speed controlled electric motor 2) rollers in a steel strip meel being used to maintain a constant thickness of steel striparrow_forwardBecause the controller contains the motor starting relay and the running and starting capacitors, the motor itself contains ______.arrow_forwardQ4/ choose the correct answer The back emf in a dc motor is ___________________?. 1-opposes the applied voltage 2- aids the applied voltage 3- opposes the field current 4- aids the armature currentarrow_forward
- Is the motor speed controller able to protect current, voltage limitation? How is it done?Explain.arrow_forwardYour Answers may be presented through Discussions, Drawings/Figures/Diagrams, Reference to NEC/PEC and Computations. 1. What is the full-load current of a 500-volt, DC, 20-horsepower motor?arrow_forwardHow may an automatic operation be achieved when a manual motor starter is used?arrow_forward
- Digital control systems Please sir could you solve this question step by step you are the bestarrow_forwardWhere can you find the low/high voltage connection diagram of a motor?arrow_forward1- Can a simple variable resistor be used instead of the fan speed regulator? and why? 2-Mention some applications in which such regulators can be used? 3-Can these organizations use to regulate the speed of cooling engines or heating devices? And why? 4-Mention some malfunctions you have seen due to the fan speed regulator in your working life? Do you suggest a method to avoid or fix it?arrow_forward
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