7. The bode plots for a plant, G(s), used in a unity feedback system are shown in Fig. 6. Thesystem can be considered as :4020-20-60-100-1200.011.O100010100o (rad/sec)-135-180-225-2700.010.11.0100100010@ (rad/sec)Fig.6O a. unstableO b. critically stableOc.stableLGjah (deg)

Answered: Image /qna-images/answer/aaa62fe2-a5e1-4179-9637-a44b05afd2f8.jpg

Answered: C. stable

Engineering

Electrical Engineering

C. stable

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Concept explainers

Types of Thyristors

With four layers of alternating P- and N- materials, a thyristor is a solid-state semiconductor device. It acts as a type of bi-stable switch and it conducts when the gate receives a current trigger and continues to conduct until the voltage is reverse biased across the device or by some means until the voltage is removed. The silicon-controlled rectifier is considered synonymous with thyristors by some sources. Thyristors are defined as more complex by other sources as it contains at least four-layer of alternating N-type and P-type substrate. They find large applications in the control of electrical power supplies, electric motor speed control, and ranging of light dimmers because thyristors can control large amounts of power supplies and voltage with a small device. The circuit symbol of the thyristor is given below.

Question

7. The bode plots for a plant, G(s), used in a unity feedback system are shown in Fig. 6. The
system can be considered as :
40
20
-20
-60
-100
-120
0.01
1.O
1000
10
100
o (rad/sec)
-135
-180
-225
-270
0.01
0.1
1.0
100
1000
10
@ (rad/sec)
Fig.6
O a. unstable
O b. critically stable
Oc.
stable
LGjah (deg)

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