What is an object? The steady state response is the response of the system when it approaches infinity. (8), (ii) A unity feedback system has an amplifier with gain K, =10 and gain ratio G(S) = 1 / S (S+2) in the feed forward Path .A derivative feedback ,H(S)=S K, is introduced as a minor loop around G(S).Determine the derivative feed back constant ,K, ,so that the system damping factor is 0.6 (8), 11. POWER SYSTEM LAB VIVA Questions and Answers pdf free download :: Post Views: 293. (a)     Low-level oscillations (b)     High-level oscillations (c)     Conditional stability (d)     Overdamping Ans: 82. 3.What are the three types of compensators? 6. (a)     Lead-compensation (b)     Lag-compensation (c)     Lead-lag compensation (d)     None of the above Ans: b, 78. technique is not applicable to nonlinear system ? What is the resonance frequency? Complete Control System lab viva - Question Answer, Engineering, Semester Electrical Engineering (EE) Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out Electrical Engineering (EE) lecture & lessons summary in the same course for Electrical Engineering (EE) Syllabus. With feed back _____ reduces. 11.What is the basis for framing the rules of block diagram reduction technique? (a)     Error detector (b)     Final control element (c)     Sensor (d)     Oscillator Ans: d, 39. Velocity error constant of a system is measured when the input to the system is unit _______ function. What are the effects of adding a zero to a system? For the system represented by the block diagram shown in fig. EDC. The transmittance is the gain acquired by the signal when it travels from one node to another node in signal flow graph. ii. The dominant pole is a air of complex conjugate pair which decides the transient response of the system. 5.List the time domain specifications. Object is termed as an instance of a class, and it has its own state, behavior and … 5. (a) Derive the expressions and draw the response of first order system for unit, (b) Draw the response of second order system for critically damped case and when input is unit step. Sketch the Bode plot and hence find Gain cross over frequency, Phase cross over, G(S) = 10(1+0.1S)/ S(1+0.01S) (1+S). (16), 11. Which of the following is an electromagnetically device ? (16), 14. The step signal is a signal whose value changes from zero to A at t= 0 and remains constant at A for t>0. 3. (16), 9. (16), 10. Sketch the Nyquist Plot for a system with the open loop transfer function, G(S) H(S)= K (1+0.5S)(1+S) / (1+10S)(S-1). (a)     Control valve (b)     Potentiometer (c) Electropneumatic converter (d) Servomotor Ans: b, 84. Explain the procedure for lead compensation and lag compensation (16), 6. Addition of zeros in transfer function causes which of the following ? Due to which of the following reasons excessive bond width in control systems should be avoided ? 5.What are the components of feedback control system? 2015First Grade College Challaker -577522 6-16 3. The, time domain specifications are i.Delay time ii.Rise time iii.Peak time iv.Peak overshoot. Computer Graphics Viva Questions And Answers Ppt Are you looking for computer hardware lab viva questions with answers ? Write the force balance equation of ideal spring element. 4. Home Control System Electronics Control System Unit wise Viva Short Questions and Answers PDF. 1. Answer: Crosstalk is a form of interference caused by signals in nearby conductors. 18.Write the analogous electrical elements in force current analogy for the elements of mechanical translational system. The loops are said to be non touching if they do not have common nodes. ii) When the system is stable, compensation is provided to obtain the desired. (a)     open (b)     closed (c) partially closed (d) any of the above Ans: a, 14. (a) Ward Leonard control (b) Field controlled D.C. motor (c) Stroboscope (d) Metadyne Ans: b, 27. 17.Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system. 17.Why derivative controller is not used in control systems? 2.List out the different frequency domain specifications? Search Here for Skill. It was written is C and lets users do processing and control under a shell. Source: Credits goes to the faculty and staff of Pavendar Bharathidasan Institute of Information Technology. That is, it has two inputs of opposite polarity. Draw the, force-voltage and force-current electrical analogous circuits and verify by writing mesh and node equations. The time taken for response to raise from 0% to 100% for the very first time is rise time. The parabolic signal is a signal whose value varies as a square of time from an initial value of zero at t=0.This parabolic signal represents constant acceleration input to the signal. get the analog lab viva questions with answers member that we present here and check out the link. The control system in which the output has an effect upon the input quantity so as to maintain the desired output value are called closed loop control system. ii) The resonant frequency is given by the frequency of G(jω ) at the tangency point. Define Instrument. (a) Linear and time-in variant systems (b) Linear and time-variant systems (c) Linear systems (d) Non-linear systems (e) None of the above Ans: a, 55. frequency, Phase cross over frequency, Gain margin and Phase margin. The type 0 system has ______ at the origin. The unity feedback system is characterized by an open loop transfer function is, G(S)= K / S(S+10).Determine the gain K ,so that the system will have a damping ratio of 0.5.For this value of K, determine settling time,Peak overshoot and time to Peak overshoot for a unit-step input. 1) What is UNIX? Monday, February 13, 2017 . Which of the following statements is correct for any closed loop system ? The slope of the log-magnitude curve near the cut-off is called cut-off rate. (a)     Bode-Nyquist stability methods (b)     Transfer functions (c) Root locus design (d) State model representatives Ans: d, 93. ii) Steady state can be determined from any type of input. (a) It leads to slow speed of response (b) It leads to low relative stability (c) Noise is proportional to band width (d) None of the above Ans: c, 37. compensator is to meet the following specifications. Lab Viva Questions Anna University EEE CSE IT ECE EIE. The phase lag produced by transportation relays (a)     is independent of frequency (b)     is inverseh’proportional to frequency (c)     increases linearly with frequency (d)     decreases linearly with frequency Ans: c. 81. The necessary condition for stability is that all the coefficients of the characteristic polynomial be positive. Obtain the steady state error of the system when subjected to an input given Polynomial r(t) = a +a t +a /2 t, 8. Control System. (8), (ii). Control System Unit wise Viva Short Questions and Answers PDF Rajeev Reddy Nareddula. (16). … UGC NET PAPER-I (ENGLISH) EXCLUSIVE ONLINE COURSE @ JUST RS 399 /- ONLY, Control System Unit wise Viva Short Questions and Answers PDF. A controller, essentially, is a (a)     sensor (b)     clipper (c)     comparator (d)     amplifier Ans: c. 41. Source #2: advanced control system lab viva questions.pdf FREE PDF DOWNLOAD For open control system which of the following statements is incorrect ? Construct the polar plot for the function GH(S) =2(S+1)/ S, . The… Determine the closed loop frequency response and estimate all the frequency domain specifications. Power Electronics. 4.What are the two segments of Nyquist contour. It is a portable operating system that is designed for both efficient multi-tasking and multi-user functions. i) When the system is absolutely unstable, then compensation is required to stabilize, the system and also to meet the desired performance. Lag-Lead compensation is employed for stable/unstable system for improvement in both steady- state and transient state performance. iii) It is based on asymptotic approximation. 6.When is lag lead compensator is required? Improve the steady state behavior of a system, while nearly preserving its transientresponse. Write the force balance equation of ideal dashpot element. The basic elements of block diagram are block, branch point and summing point. 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