Answered: 3.1. What are the types of feedback…

3.1. What are the types of feedback available in generic control systems? 3.2. What is the purpose of a feedback? 3.3. Give three important features/parts of an ideal control system

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter30: Ac Solid-state Reduced Voltage Controller

Section: Chapter Questions

Problem 1SQ: List some advantages of solid-state control.

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Question 3
3.1. What are the types of feedback available in generic control systems?
3.2. What is the purpose of a feedback?
3.3. Give three important features/parts of an ideal control system
3.4. What are the advantages of an open-loop control system?

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What is difference between Open-loop and Close-loop control system? give note on both
6. Which among the following is not an advantage of an open loop system? a. Simplicity in construction & design b. Easy maintenance c. Rare problems of stability d. Requirement of system recalibration from time to time 7. Match the following notations with their meanings: - 1) Laplace of error signal - 2) Laplace of output signal. - 3) Forward transfer function. - 4) Feedback transfer function G(s)- В. H(s) C(s) А. С. D. E(s) а. А- 2, В-3, С- 1, D- 4 с. А- 2, В- 3, С-4, D- 1 b. А-3, В-4, С- 2, D- 1 d. A- 1, B- 2, С- 3, D-4
DISCUSSION: 1. What do you mean by rise time? Derive its expression for a unity feedback 2nd order control system. 2. Why is less overshoot desired for practical systems?
8. The output of a feedback control system must be a function of a. reference and output b. reference and input c. input and feedback signal d. output and feedback signal 10. For open control system which of the following statements is incorrect? a. Less expensive b. Recalibration is not required for maintaining the required quality of the output c. Construction is simple and maintenance easy d. Errors are caused by disturbances 11.the closed loop system is. a. Autopilot for an aircraft c. Car starter b. Direct current generator d. Electric switch 12. In regenerating the feedback, the transfer function is given by a. C(s)/R(s)-G(s)/I+G(s)H(s) b. C(s)/R(s)=G(s)H(s)/1-G(s)H(s) c. C(s)/R(s)=G(s)/1+G(s)H(s) d. C(s)/R(s)=G(s)/1-G(s)H(s)
It is a control system in which the control action is independent of the output. A.)closed loop system B.)cascade control system C.)feedback control system D.) open loop system
5) Explain the working principle of stepper motor with s3+ 5s2 + 12s + K = 0. Find the range of K for all the roots to lie to the The characteristics equation for feedback control is, neat diagram. The characteristics equation for feedback control. left of s = 1.
List some advantages of solid-state control.
control system theory question
1. What are the advantages of an open-loop control system?
Q3\ the characteristic equation of a feedback control system figure below, check its stability using Routh Criterion. * 2S3 + 7s2 + 13S + 9 = 0