Related InterviewSolutions

• What is the response of the feedback function with open loop transfer function G(s) = 4/s(s+5) and input is input step?(a) 1-1/3(4e^-t – e^-4t)(b) 1-1/2(6e^-t – e^-4t)(c) 1-1/3(6e^-t – e^-4t)(d) 1-1/2(4e^-t – e^4t)This question was posed to me in semester exam.This intriguing question comes from Integral Square Error & its Minimization topic in chapter Error Analysis of Control Systems
• The steady state error for a unity feedback system for the input r(t) to the system G(s) =K(s+2)/s(s^3+7s^2+12s) is 6R/K. The input r (t) is _______(a) Rt2/2(b) Rt3/2(c) Rt5/2(d) Rt7/2The question was asked in an international level competition.The origin of the question is Steady State Error in division Error Analysis of Control Systems
• For a unity feedback control system, the open loop transfer function G(s) = 10(s+2)/s^2(s+1). What is the acceleration error constant?(a) Infinity(b) 5(c) 10(d) 20I have been asked this question in an online interview.My doubt stems from Integral Square Error & its Minimization topic in portion Error Analysis of Control Systems
• A performance index must offer selectivity.(a) True(b) FalseThis question was posed to me in an internship interview.This interesting question is from Integral Square Error & its Minimization topic in chapter Error Analysis of Control Systems
• Systems of type higher than 1 are not employed in practice.(a) True(b) FalseThe question was posed to me in exam.This question is from Steady State Error in division Error Analysis of Control Systems
• What is the need for a controller?(a) Receive control signals(b) Transmit control signals(c) Modify control signals(d) Create control signalsI had been asked this question during an internship interview.My question is based upon Integral Square Error & its Minimization in section Error Analysis of Control Systems
• The open loop transfer function for a unit feedback system is G(s) = K/s(sT+1). By what factor the amplitude gain K should be reduced so that the peak overshoot becomes 25% from 75%?(a) 75(b) 25(c) 20(d) 10I got this question in an internship interview.Query is from Integral Square Error & its Minimization in section Error Analysis of Control Systems
• The Laplace transform of a parabolic signal is _______(a) 1(b) A/s^3(c) A/s^2(d) A/sI have been asked this question in an interview.Query is from Steady State Error in division Error Analysis of Control Systems
• For a unity feedback system, the open loop transfer function is G(s) = K(s+2)/s^2 (s^2+7s+12). What is the type of system?(a) One(b) Two(c) Three(d) FourI got this question at a job interview.My question is based upon Steady State Error in section Error Analysis of Control Systems
• The steady state error for a unit step input is ________(a) 1/kp(b) 1/(1-kp)(c) 1/2kp(d) 1/(1+kp)The question was posed to me during an online exam.Asked question is from Steady State Error topic in chapter Error Analysis of Control Systems