Testbook Logo
Exams SuperCoaching Test Series Skill Academy
More

Question

Download Solution PDF

In the industrial control system, which one of the following methods is most commonly used in designing a system for meeting performance specifications?

This question was previously asked in
ESE Electronics 2014 Paper 2: Official Paper
Attempt Online
View all UPSC IES Papers >
  1. The transfer function is first determined and then either a lead compensation or lag compensation is implemented
  2. The transfer function is first determined and PID controllers are implemented by mathematically determining PID constants
  3. PID controllers are implemented without the knowledge of the system parameters using Ziegler— Nichols method
  4. PID controllers are implemented using Ziegler -- Nichols method after determining the system transfer function

Answer (Detailed Solution Below)

Option 3 : PID controllers are implemented without the knowledge of the system parameters using Ziegler— Nichols method
Free Tests
View all Free tests >
Free
ST 1: UPSC ESE (IES) Civil - Building Materials
6.4 K Users
20 Questions 40 Marks 24 Mins
Start Now

Detailed Solution

Download Solution PDF

Explanation:

In Ziegler Nicholas's method, by giving a step input, first, we obtain the response from the response curve.

∴ We need the output response curve and we don’t need any information about the system parameter.
Download Solution PDF
Latest UPSC IES Updates

Last updated on Jun 23, 2025

-> UPSC ESE result 2025 has been released. Candidates can download the ESE prelims result PDF from here.

->  UPSC ESE admit card 2025 for the prelims exam has been released. 

-> The UPSC IES Prelims 2025 will be held on 8th June 2025.

-> The selection process includes a Prelims and a Mains Examination, followed by a Personality Test/Interview.

-> Candidates should attempt the UPSC IES mock tests to increase their efficiency. The UPSC IES previous year papers can be downloaded here.

More Controllers Questions

Q1.Consider a unity-gain negative feedback system consisting of the plant G(s) (given below) and a proportional-integral controller. Let the proportional gain and integral gain be 3 and 1, respectively. For a unit step reference input, the final values of the controller output and the plant output, respectively, are \(\rm G(s)=\frac{1}{s-1}\)
Q2.Which of the following is considered as a controller in an automatic toaster system ?
Q3.A proportional-integral-derivative (PID) controller is employed to stably control a plant with transfer function  \(\rm P(s)=\frac{1}{(s+1)(s+2)}\) Now, the proportional gain is increased by a factor of 2, the integral gain is increased by a factor of 3, and the derivative gain is left unchanged. Given that the closed-loop system continues to remain stable with the new gains, the steady-state error in tracking a ramp reference signal ________
Q4.In the closed loop control system, proportional integral (Pl) controller is preferred compared to proportional controller (P): 
Q5.In PD controller, the derivative action plays a significant role in increasing _______ of response.
Q6.The subsystem that generates the input to the plant or process is knows as
Q7.What is the full form of PID?
Q8.Consider a transport lag process with a transfer function 𝐺𝑝(𝑠) = 𝑒−𝑠. The process is controlled by a purely integral controller with transfer function \(G_c(s) = \frac{K_i}{s}\) in a unity feedback configuration. The value of 𝐾𝑖 for which the closed loop plant has a pole at 𝑠 = −1, is ___________.
Q9.A controller essentially is a/an
Q10.The gain of the transfer function between the plant output and an additive load disturbance input of frequency 2π / Tu in closed loop with a P-controller designed according to the Ziegler-Nichols tuning rule as given above is

More Controllers and Compensators Questions

Q1.Consider a unity-gain negative feedback system consisting of the plant G(s) (given below) and a proportional-integral controller. Let the proportional gain and integral gain be 3 and 1, respectively. For a unit step reference input, the final values of the controller output and the plant output, respectively, are \(\rm G(s)=\frac{1}{s-1}\)
Q2.Which of the following is considered as a controller in an automatic toaster system ?
Q3.The transfer function of the lead compensator is:
Q4.Given below are two statements: Statement I: In proportional control, the actuating signal for the control action in a control system is proportional to the error signal Statement II: It is desirable that control system be over damped for the point of view of quick response In the light of the above statements, choose the correct answer from the options given below:
Q5.In a unity-gain feedback control system, the plant  \(\rm P(s)=\frac{0.001}{s(2s+1)(0.01s+1)}\) is controlled by a lag compensator \(\rm C(s)=\frac{s+10}{s+0.1}\) The slope (in dB/decade) of the asymptotic Bode magnitude plot of the loop gain at 𝜔 = 3 rad/s is ________ (in integer) 
Q6.A proportional-integral-derivative (PID) controller is employed to stably control a plant with transfer function  \(\rm P(s)=\frac{1}{(s+1)(s+2)}\) Now, the proportional gain is increased by a factor of 2, the integral gain is increased by a factor of 3, and the derivative gain is left unchanged. Given that the closed-loop system continues to remain stable with the new gains, the steady-state error in tracking a ramp reference signal ________
Q7.In the closed loop control system, proportional integral (Pl) controller is preferred compared to proportional controller (P): 
Q8.Which of the following statements in the context of stability margins are true? a. The increase in phase margin indicates an increase in damping factor. b. A lag compensator tends to decrease the phase margin of the system. c. A lead compensator tends to increase the phase margin of a system. d. A lead compensator improves the transient response of the system.
Q9.A system with impulse response is essentially a _______ compensator and used as a ___ filter.
Q10.Which of the following is true for the network shown below -
Crack GATE Electrical with
India's Super Teachers
Explore Supercoaching For FREE
Suggested Test Series
View All >
UPSC ESE (IES) Civil Mock Test Series
116 Total Tests with 1 Free Tests
Start Free Test
UPSC ESE (IES) Electrical Mock Test Series
68 Total Tests with   1 Free Tests
Start Free Test
Suggested Exams
Exam-Logo
UPSC IES

UPSC IES Important Links

More Control Systems Questions

Q1.A unity feedback system is characterized by the open-loop transfer function \(G(s)=\frac{100}{s(5 s+10)(2 s+10)}\) The steady-state errors for unit-step and unit-ramp inputs are :
Q2.In the circuit shown switch is closed at t = 0. The time constant of the circuit is :
Q3.The loop transfer function of a closed-loop control system is given as : \(G(s) H(s)=\frac{k(s+1)}{s(s+2)(s+3)}\) The centroid of the asymptotes in root locus is :
Q4.For a control system having fourteen poles and two zeros, the slope in its magnitude plot for high frequency asymptote will be :
Q5.The Routh Array is as below : \(\begin{array}{lllll} \mathrm{S}^{6} & 1 & 8 & 20 & 16 \\ \mathrm{S}^{5} & 2 & 12 & 16 & \\ \mathrm{S}^{4} & 2 & 12 & 16 & \\ \mathrm{S}^{3} & 0 & 0 & & \end{array}\) The row of zero of this array will be replaced by coefficients of 
Q6.The number of roots in the left half of the s-plane for a system having characteristic equations : s3 + 5s2 + 7s + 3 = 0 is : 
Q7.Explain the pattern and trend of public expenditure on social services in the post reforms period in India. To what extent this has been in consonance with achieving objective of inclusive growth? 
Q8.The Nyquist criterion for stability states that an amplifier is unstable if the Nyquist curve encloses the -1 + j0 point, and the amplifier is stable if the curve does not enclose this point. If Aβ
Q9.The phase margin of a system with the open-loop transfer function \(G(s) H(s)=\frac{1-s}{(s+1)(s+2)}\) is
Q10.The phase margin of a system having the loop transfer function \(G(s) H(s)=\frac{2 \sqrt{3}}{s(s+1)}\) is
Important Exams
Super Coaching
Exams
Test Series
Previous Year Papers
Objective Questions
Testbook USA SAT Exam
Testbook USA ACT Exam
US College Admissions Guide
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
[email protected]
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Our Apps
Follow us on
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Get Free Access Now
Hot Links： teen patti - 3patti cards game downloadable content teen patti master plus teen patti game online real teen patti