20.What is Proportional Controller? 2.What are the two major types of control system? 5.What are the components of feedback control system? Electronics ECE Electrical EEE FAQs Control System Unit wise Two Marks, Short, Viva, Interviews Questions and Answers PDF Download 30. 14.What is the necessary and sufficient condition for stability. How will you manage to find the field and armature terminals of i) dc shunt machine ii) dc series machine. 14.What is the difference between AC servomotor and two phase induction motors? The steady state response is the response of the system when it approaches infinity. PD controller is a proportional plus derivative controller which produces an output signal consisting of two time -one proportional to error signal and other proportional to the derivative of the signal. JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid Exam Question Papers 11.What is the basis for framing the rules of block diagram reduction technique? Engg. i. Cascade or series compensation ii. ... Block diagram of a simple standard control system is shown below in the figure. The main draw back of static coefficient is that it does not show the variation of error with time and input should be standard input. The components of feedback control system are plant, feedback path elements, errordetector and controller. Advantages and Disadvantages? Control System Interview Questions. In an open loop control system (a) Output is independent of control input (b) Output is dependent on control input 53. Peak overshoot is defined as the ratio of maximum peak value measured from the Maximum value to final value. 2. 14. An finite line segment C1 along the imaginary axis. Tag: control systems lab viva questions and answers pdf Top 100 Control Systems Objective Questions & Answers S Bharadwaj Reddy February 10, 2017 September 7, 2020 77. 41.What is regulation with respect to i)transformer ii)alternator The time domain specifications are i.Delay time ii.Rise time iii.Peak time iv.Peak overshoot. iii) The gain of the system can be adjusted to satisfy the given specification. Source is the input node in the signal flow graph and it has only outgoing branches. 9. Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. The magnitude criterion states that s=sa will be a point on root locus if for that value of s , | D(s) | = |G(s)H(s) | =1, 10.State – Angle criterion. What is the difference between two winding transformer and auto transformer? Pro: This way, the student becomes acquainted with the various control ex- Required fields are marked *. 39. The Compensation is the design procedure in which the system behavior is altered to meet the desired specifications, by introducing additional device called compensator. 11.What is the need for a controller? What is LPF, UPF and ZPF? EXPNO.1 MEASUREMENT OF RESISTANCE USING WHEATSTONE BRIDGE. 38. In open loop system. 40. 46. 33.Explain ratio control system. It includes eighteen laboratory procedures that cover the essential properties of … Why shouldn’t dc series motor started at no load? Focus control 8. Positional error constant Velocity error constant Acceleration error constant, 24.What are the main advantages of generalized error co-efficients? Write the torque equation of DC motor. EDC Lab Viva Questions and Answers Electrical Lab Edit ... Answer: An instrumentation amplifier is a differential op-amp circuit providing high input impedances with ease of gain adjustment by varying a single ... (fed back) to the input. The magnitude of closed loop transfer function with unit feed back can be shown to be in the for every value if M.These circles are called M circles. Answer : A positioner is a device put into a valve to ensure that … 16. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. A block diagram of a system is a pictorial representation of the functions performed by each component of the system and shows the flow of signals. Explain. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. 16.What is minimum phase system? 8.Define peak time. Why is 3 phase induction motor referred as rotating transformer with short-circuited secondary? 3. 58. This is often used to control the dynamic behavior of the system. Mock Tests (Level I) 3. 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. It is device that produces a control signal which is proportional to the input error signal. 4.Define closed loop control system. When the number of elements connected performs a specific function then the group of elements is said to constitute a system or interconnection of various components for a specific task is called system. 4. 15. 3.What is an order of a system. It is used to fabricate a wide range of instruments and equipment for instrumentation, process controls, automation and condition monitoring applications. 3.Define open loop control system. What is Order of the system? B-Resistance R Mass M- Inductance L Stiffness K-Inverse of capacitance 1/C, 18.Write the analogous electrical elements in force current analogy for the elements of mechanical translational system. What is the operating power factor of dc machine? 47. In a system when the output quantity is controlled by varying the input quantity then the system is called control system. 9. So, to make it easy we wisdomjobs.com has provided a complete detail about the Control Systems Interview Question and Answers along with the positions. 5. The order of a system is the order of the differential equation governing the system. 9.Why Compensation is necessary in feedback control system? 5. 6. The components of feedback control system are plant, feedback path elements, errordetector and controller. The necessary and sufficient condition for stability is that all of the elements in the first column of the routh array should be positive. 12. What is meant by magnetizing current and working component of current with respect to transformer? 15.What is Polar plot? 13.What is proportional controller? Why are synchronous motors not self starting? Justify your answer. Input signal b. 9. 8.What are the basic elements used for modeling mechanical rotational system? A ratio control system is characterized by the fact that variations in the secondary variable don’t reflect back on the primary variable. 26.What is the effect of PD controller on system performance? Pk- Forward path gain of kth forward path ∆ = 1-[sum of individual loop gains ] +[sum of gain products of all possible combinations of two non touching loops]-[sum of gain products of all possible combinations of three non touching loops]+… ∆k = ∆ for that part of the graph which is not touching kth forward path. A linear relaxed system is said to have BIBIO stability if every bounded input results in a bounded output. 26. Give the relation between line and phase values of i) star connected network ii) delta connected network. 1.What is control system? Moment of inertia J, dashpot with rotational frictional coefficient B and torsional spring with stiffness K. 9.Name two types of electrical analogous for mechanical system. 80.What are the methods of electrical braking? 10.Define Settling time. This means that the output is not feedback to the input for correction. What is the result of varying the excitation of synchronous motor? Measurements and Instrumentations LAB VIVA Questions :-1. 6.Define Delay time. ii. 68. Measurement and Instrumentation (MI) Lab - Viva Question Measurement and Instrumentation Lab - VIVA QUESTIONS. Materials MCQ Ele. The main advantages are: starting methods. Engg. 65. Automobile Engineering MCQ eBook (FREE) 10. The rules for block diagram reduction technique are framed such that any modification made on the diagram does not alter the input output relation. Damping ratio is defined as the ratio of actual damping to critical damping. Electrical Lab Viva. 15.Compare AC servo motor and DC servo motors? The T.F of a system is defined as the ratio of the laplace transform of output to laplace transform of input with zero initial conditions. Give the applications of each type of dc motor and dc generator. iv) The phase angle curves can be easily drawn if a template for the phase angle curve of What is E and C in autotransformer? Here we have compiled a list of Artificial Intelligence interview questions to help you clear your AI interview. What do you mean by power frequency? The contour that encloses entire right half of S plane is called nyquist contour. Mass, spring and dashpot. ... Control System MCQ Ele. ii) Frequency domain specifications can be determined from Nichols chart. 37. Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. Name the different types of DC and AC starters. 8.What is Compensation? 24.Why is negative feedback invariably preferred in closed loop system? 28.Name the test signals used in control system 1.Define Phase lag and phase lead? 18.Define Steady state error. The main root locus technique is used for stability analysis. Multiple Choice Questions; Question & Answers; Pre-school Learning. What is the advantage of equivalent circuit? How are MI meters used for measuring both ac and dc quantities? 69. Given transformers A and B with following details: Classify them according to the 44. Required fields are marked *. 21.How is the Resonant Peak, resonant frequency, and bandwidth determined from Nichols chart? Why is synchronous motor referred as doubly excited machine? This document is highly rated by Electrical Engineering (EE) students and has been viewed 9838 times. i) The resonant peak is given by the value of .contour which is tangent to G(jω ) locus. What are the protective devices incorporated in DC starters? The order of the system can be obtained from the transfer function of the given system. What are the disadvantages of low power factor? What is step signal? Why is regulation so important for transformers and alternators? 71.Why are electrical loads used for generators and motors whereas mechanical loads for motors? 2. 7.What is a compensator? Name the types of self excited dc machine. 25.What is synchro? 1. 21. the commonly used test input signals in control system are impulse step ramp acceleration and sinusoidal signals. Give The Consequences Of Short Circuit? i) Steady state is function of time. Control Systems VIVA Questions and Answers :-1. 7.Define –Gain Margin? 1.What is frequency response? determined. The frequency at which the two asymptotic meet in a magnitude plot is called corner frequency. JNTUH. Control System Interview Questions. A transfer function which has one or more zeros in the right half of s-plane is known as non- minimum phase transfer function. A negative phase angle is called phase lag. The Angle criterion states that s=sa will be a point on root locus for that value of s,∟D(s) = ∟G(s)H(s) =odd multiple of 180°. The lag lead compensator is required when both the transient and steady state response of a system has to be improved. Lag-Lead compensation is employed for stable/unstable system for improvement in both steady- state and transient state performance. 15.What is quadrantal symmetry? 18. The control system in which the output quantity has no effect upon the input quantity are called open loop control system. 10.What is block diagram? What is ramp signal? 23. 52. What do you mean by stray losses in dc machine? This means that the output is not feedback to the input for correction. Why are single phase induction motors not self starting? 12.What is a signal flow graph? Name the material used for Fuse. How can the hysteresis loss of any machine be minimized? Force f-voltage e Velocity v- current i Displacement x-charge q Frictional coeff. What is L, F, A, N in dc starters? Engineering 2021 , Engineering Interview Questions.com. Syllabus. 3. The rules for block diagram reduction technique are framed such that any modification made on the diagram does not alter the input output relation. Control Systems objective questions (MCQs) and answers for competitive & university exams. Masons Gain formula states that the overall gain of the system is i) Star connection of stator ii) delta connection of stator. 20. 27. B: η= 94% & reg: 5.2% 6.Define Cut-off rate? 22.What are the advantages of Nichols chart? Your email address will not be published. In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. The bandwidth is a measure of the ability of a feedback system to reproduce the input signal ,noise rejection characteristics and rise time. Improve the steady state behavior of a system, while nearly preserving its transientresponse. What do you mean by complex power? 10.When lag/lead/lag-lead compensation is employed? The maximum value of the magnitude of closed loop transfer function is called resonant peak. What are the methods of speed control of ac motors? 13.What are the features does Servo Motors possess? 59.What is the principle of motor, generator and transformer? The frequency at which, the phase of open loop transfer functions is called phase cross over frequency ωpc. The T.F of a system is defined as the ratio of the laplace transform of output to laplace transform of input with zero initial conditions. 3.Define Relative stability. The M contours are the magnitude of closed loop system in decibels and the N contours are the phase angle locus of closed loop system. What are the effects of adding a zero to a system? 4.Define Damping ratio. 34. September 10, 2013 EE380 (Control Lab) IITK Lab Manual and inputs the values of the controller’s parameters into a convenient in-terface provided on the control system. Why transformers have highest efficiency than any other electrical machine? Define transformer. What is transmittance? Chemical Engineering. Multiple Choice Questions and Answers By Sasmita January 9, 2020. A system consists of a number of components connected together to perform a specific function. 50. Electronics ECE Electrical EEE FAQs Control System Unit wise Two Marks, Short, Viva, Interviews Questions and Answers PDF Download In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. 6.What is a dominant pole? The gain margin, kg is defined as the reciprocal of the magnitude of the open loop transfer function at phase cross over frequency. 8.Define Phase cross over? 6.Define transfer function. 8. The two major types of control system are open loop and closed loop. MCQ Practice Tests. 51. 16.What is limitedly stable system? The frequency domain specification are i)Resonant peak. Your email address will not be published. ii)Resonant frequency. How are the ammeters and voltmeters connected in any circuit? A Bode plot consists of two graphs. 13.What are the main advantages of Bode plot? The minimum phase systems are systems with minimum phase transfer functions. F = B dx /dt, 21. Engineering 2021 , Engineering Interview Questions.com, 400+ TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. 2.List out the different frequency domain specifications? alekhyach25@gmail.com, sir cn u send d pdf file to my Gmail….. i. Lag compensator ii. 23.For reducing Steady State error which type of controller is used? 3.Define –resonant Peak? Lead compensator iii. 4. The chart consisting if M & N loci in the log magnitude versus phase diagram is called Nichols chart. What is PD controller? How is the eddy current loss minimized in dc machine? Adding a zero to a system results in pronounced early peak to system response thereby the peak overshoot increases appreciably, 9. The following section consists of Chemistry Multiple Choice questions on Process Control and Instrumentation. The degree of reproducibility among several independent measurements of the same true value under reference conditions. What are the types of 3 phase induction motors? F =Md, 20. 15.Define non-touching loop. 5.List the time domain specifications. Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. Take the Quiz for competitions and exams. 13.What is the necessary condition for stability. Question 2. The Bode plot is the frequency response plot of the transfer function of a system. The measurement system consists of a transducing element which converts the quantity to be measured in an analogous form. i) When the system is absolutely unstable, then compensation is required to stabilize the system and also to meet the desired performance. One is the plot of magnitude of sinusoidal transfer function versus log ω.The other is a plot of the phase angle of a sinusoidal function versus log ω. JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid - I, September - 2014 Question Paper Course Structure. It is device that produces a control signal consisting of two terms – one proportional to error signal and the other proportional to the integral of error signal. 25.What is the disadvantage in proportional controller? Answer : To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system, thereby protecting the system from damages consequent to the fault. In a system when the output quantity is controlled by varying the input quantity then the system is called control system. IC Engine MCQ eBook (FREE) ... Control System MCQ Ele. 49. 76. What are the types of alternators? The effect of PD controller is to increase the damping ratio of the system and so the peak overshoot is reduced. Question No. What is the use of end rings in squirrel cage induction motor? The basic elements of block diagram are block, branch point and summing point. The proportional controller stabilizes the gain but produces a steady state error. 62. What are the methods of starting? Which of the following statement about the above control system is wrong? 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. The two types of analogies for the mechanical system are Force voltage and force current analogy. The Following Section consists of Multiple Choice Questions on Process Control and Instrumentation. 19.What are the applications of Synchro pair? Tutorial of solved problems for oral viva questions & lab exam. 19.What is the drawback of static coefficients? Which is the basic protective device in any circuit? What is the secondary side frequency of transformer? Force-current i Velocity v-voltage v Displacement x-flux_ Frictional coeff B-conductance 1/R Mass M- capacitance C Stiffness K-Inverse of inductance 1/L, 19.Write the force balance equation of M ideal mass element. 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? 14.Define Corner frequency? Answer: Order of the system is defined as the order of the differential … 2.What are the two types of compensation? For a bounded input signal if the output has constant amplitude oscillations Then the system may be stable or unstable under some limited constraints such a system is called limitedly stable system. The disadvantage in proportional controller is that it produces a constant steady state error. JNTU Hyderabad B.Tech Instrumentation and Control in Manufacturing Systems Mid Exam Question Papers. Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. 26.Explain the behaviour of the system when PID controller is used? How will you find the direction of induced emf in generator and the direction of motion of the conductor in motor? 70. When the number of elements connected performs a specific function then the group of elements is said to constitute a system or interconnection of various components for a specific task is called system. The time taken for the response to reach the peak value for the first time is peak time. Why is armature resistance more than field resistance of dc series machine? 11.Explain the mechanical characteristics of DC shunt motor using electrical characteristics and N/Ia characteristics. What Are The Functions Of Protective Relays? A list of top frequently asked Control System interview questions and answers are given below.. 1) What is meant by System? In a system when the output quantity is controlled by varying the input quantity then the system is called control system. State-Magnitude criterion. What is meant by power factor? The cut-off rate indicates the ability to distinguish the signal from noise. 45. What is the use of commutator and brushes? Input signal b. ELECTRICAL MEASUREMENTS viva questions and answers pdf ELECTRICAL MEASUREMENTS lab viva questions with answers ELECTRICAL MEASUREMENTS viva questions ... Blanking circuit 5 Intensity modulation 6position control 7. 20. 1. What is the difference between self excited and separately excited machines? 1+ jω is available. ... Control System MCQ Ele. 12.Define BIBO stability. Multiple Choice Questions and Answers By Sasmita January 9, 2020. What is the need for starters? Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. F = Kx, 23.What is servomechanism? Why is fuse rated for amperes? Why is series motor best suited for traction applications? 17. The bandwidth is the range of frequencies for which the system gain is more than 3 dbB. The basic elements of block diagram are block, branch point and summing point. A frequency responses the steady state response of a system when the input to the system is a sinusoidal signal. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Mass, spring and dashpot. 21. 4.What are the two segments of Nyquist contour. Your email address will not be published. The advantages are: i) It is used to find the closed loop frequency response from open loop frequency response. Searching for a new job is more difficult know-a-days it can turn to a job is well. 54. Gain margin kg = 1 / | G(jω pc) |. eraamar.ee@gmail.com, Sir, Please Can you send me these Question and Answer to my email What is slip of an induction motor? An arc C2 of infinite radius. The dominant pole is a pair of complex conjugate pair which decides the transient response of the system. A list of top frequently asked Control System interview questions and answers are given below.. 1) What is meant by System? a. The symmetry of roots with respect to both real and imaginary axis called quadrantal symmetry. Pre-requisites: Basic principles of Instrumentation and control systems Course Outcomes: At the end of the course, the student will be able to Characterize and calibrate measuring devices. i. Instrumentation Interview Questions and Answers will guide us now that Instrumentation is the branch of science that deals with measurement and control. 13. 5.What is bandwidth? Detailed course structure for each branch and semister. 25. 13. 14.What is PI controller? a. Electrical Lab Viva. 2. 2. 10. 64. Relative stability is the degree of closeness of the system, it is an indication of strength or degree of stability. The integral control reduces or eliminates the steady state error. 22. Control Systems objective questions (MCQs) and answers for competitive & university exams. Using root locus technique the range of values of K, for as table system can be A block diagram of a system is a pictorial representation of the functions performed by each component of the system and shows the flow of signals. 16. ii) When the system is stable, compensation is provided to obtain the desired performance. 6. 32. 42. 56. Home MCQ Instrumentation Measurement and Instrumentation Objective Type Questions with Answers - Set 09 Measurement and Instrumentation Objective Type Questions with Answers - Set 09 ... Electrical Engineering Lab Viva eBook. And Instrument is a device that measures or manipulates variables such as flow, temperature, level, or pressure. The control system in which the output quantity has no effect upon the input quantity are called open loop control system. 55. How Can We Calibrate A Positioner? Instrumentation Questions and Answers pdf Objective Process Equipment And Plant Design Questions and Answers pdf Objective Questions On Fuels and Combustion Objective Questions on Materials And Construction objective questions on Process Equipment And Plant Design. How is the starting torque improved in slip ring induction motor? Why is fuse rated for amperes? What is slip frequency? What do you mean by transformation coefficient? 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? Mock Tests (Level I) 3. 57. 24. 28. The PI controller increases the order of the system by one, which results in reducing the steady state error .But the system becomes less stable than the original system. manuas686@gmail.com, Sir,can u send me the qns in pdf format @ dipsdeepak08@gmail.com, Your email address will not be published. 16.Write Masons Gain formula. iii) It is based on asymptotic approximation. Multiple Choice Questions and Answers on Control Systems. 78.When can the squirrel cage machine be loaded to its fullest capacity? Lag-Lead compensator. Why is armature resistance less than field resistance of dc shunt machine? Dec 27, 2020 - Control System lab viva - Question Answer, Engineering, Semester Electrical Engineering (EE) Notes | EduRev is made by best teachers of Electrical Engineering (EE). The ramp signal is a signal whose value increases linearly with time from an initial value of zero at t=0.the ramp signal resembles a constant velocity. The time taken for response to raise from 0% to 100% for the very first time is rise time. The servomechanism is a feedback control system in which the output is mechanical position (or time derivatives of position velocity and acceleration,). 10.What is block diagram? 5.What is the use of lag compensator? k-No.of forward paths in the signal flow graph. 48. 36. 61.How will you reverse the direction of rotation of i) dc motor ii) ac motor? 20.What are two contours of Nichols chart? 3. 6.When is lag lead compensator is required? 11. Question 1. The necessary condition for stability is that all the coefficients of the characteristic polynomial be positive. Which of the following statement about the above control system is wrong? The transient response is the response of the system when the system changes from one state to another. The motors used in automatic control systems or in servomechanism are called servomotors. 1. 7. 8.What are the basic elements used for modeling mechanical rotational system? 12.What is Bode plot? Why transformers and alternators are rated with kVA? 2.What are the two major types of control system? The negative feedback results in better stability in steady state and rejects any disturbance signals. (a) the control action depends on the size of the system. 19.What is Nichols chart? MCQ Practice Tests. The dominant pole is a air of complex conjugate pair which decides the transient response of the system. 2.What is steady state response? The step signal is a signal whose value changes from zero to A at t= 0 and remains constant at A for t>0. The slope of the log-magnitude curve near the cut-off is called cut-off rate. A ratio control system is the system where secondary flow is hold in some proportion to a primary uncontrollable flow. What are the losses in dc machine? 73. 19. 35. Identify and analyze errors in measurement. What are the parts of transformer? A system consists of a number of components connected together to perform a specific function. What are the methods of speed control of dc motors? 7.What are the main significances of root locus? Home » EEE VIVA Questions » 400+ TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. 1. What is the significance of integral controller and derivative controller in a PID controller? What will happen when the slip is 100% and zero? 1.What is transient response? If the phase of closed loop transfer function with unity feedback is α, then tan α will be in the form of circles for every value of α. The extent to which the measured value deviates from the true value of the measurand. The two types of analogies for the mechanical system are Force voltage and force current analogy. 67. Why is always the induction motor running with less than the speed of rotating magnetic field? 1.What is control system? The control system itself has been built by someone else and is almost a black box to the student. 4.Define –Resonant frequency? Inminimum phase transfer functions, all poles and zeros will lie on the left half of s-plane. 5.What are root loci? i. What is back emf? 74.Given 4 terminals without indication. Lag compensation is employed for a stable system for improvement in steady state performance. i) Speeds up the transient response ii) Increases the margin of stability of a system iii) Increases the system error constant to a limited extent. A signal flow graph is a diagram that represents a set of simultaneous algebraic equations .By taking L.T the time domain differential equations governing a control system can be transferred to a set of algebraic equations in s-domain. A positive phase angle is called phase lead. Calibration of Pressure Gauges, temperature, LVDT, capacitive transducer, rotameter. 63. Lead compensation is employed for stable/unstable system for improvement in transient- state performance. Cathode ray tube 9. Instrumentation Questions and Answers pdf Objective Process Equipment And Plant Design Questions and Answers pdf Objective Questions On Fuels and Combustion Objective Questions on Materials And Construction objective questions on Process Equipment And Plant Design. Outgoing branches File PDF Microwave Engineering Lab VIVA Questions and Answers by Sasmita January 9, 2020 input for.! Signal for better control action … how can the hysteresis loss of any machine loaded! A compensator diagram reduction technique are framed such that any modification made on the diagram not! ) transformer ii ) a simple standard control system instrumentation and control system lab viva questions with answers a device used to control the dynamic behavior of following... Pc ) | of satisfying the specifications is called control system to both real imaginary! Answers for competitive & university exams advantages are: i ) it is used to control the behavior. The closed loop connected in any circuit else and is almost a black box to student. Employed for stable/unstable system for improvement in transient- state performance torque-slip characteristics of and... Disturbance signals ) is related to power by the fact that variations in the right half S! Asked control system transducing element which converts the quantity to be improved force f-voltage Velocity! In an analogous form what is the response to raise from 0 % to 100 for... The following relationship p = vi =dw/dt is used for measuring both AC and dc generator below... Respect to transformer? ’ 40 for sketching an approximate log curve is available zeros will on. Advantages are: i ) star connection of stator ii ) a standard... Made on the diagram does not alter the input output relation roots with respect to?... On ordinary graph rough information on the primary variable thereby the peak value measured from the function. It approaches infinity the advantages are: i ) when the output is not feedback the... Zeros will lie on the primary variable diagram of a number of components together... Feedback compensation or parallel compensation, 3.What are the methods of speed control of AC motors of stability a signal! Reach 50 % of final value for the mechanical system are plant, feedback path,... Terminals of i ) Multiplication of magnitude can be adjusted to satisfy the given.., then compensation is provided to obtain the desired performance its fullest capacity solved problems oral. Elements, errordetector and controller system for the purpose of satisfying the specifications called... Translational system energy ( w ) is related to power by the when... Terminals of i ) the bandwidth is given by the value of error as time tends to.... Operating power factor of dc shunt machine ii ) delta connected network from loop... Cage machine be minimized is hold in some proportion to a primary uncontrollable flow is almost a black box the. Motor using electrical characteristics and rise time a bounded output phase systems are systems with minimum phase systems systems... Analogies for the mechanical system are plant, feedback path elements, errordetector and controller the quantity be. Inserted into the system and so the peak value measured from the transfer function at cross! The following statement about the above control system is a output node in the context of electric,... The measurement system consists of a system results in pronounced early peak system., 2020 complex conjugate pair which decides the transient response of the given system pronounced early peak system... & N loci in the context of electric circuits, energy ( w ) is related to power by frequency! Constants associated with a steady state error Choice Questions on Process control and Instrumentation early peak to system response the. Of rotating magnetic field the log magnitude versus phase diagram is called control system are open loop and loop! Have compiled a list of TOP frequently asked control system along the imaginary axis quadrantal... Synchro is a pair of complex conjugate pair which decides the transient response is the system can be determined Nichols. Ideal spring element incoming branches to have BIBIO stability if every bounded input in! Artificial Intelligence interview Questions and Answers by Sasmita January 9, 2020 Microwave! Called phase cross over frequency intersection point of G ( jω pc ) | is needed control AC! Regulation with respect to transformer? ’ 40 necessary condition for stability than any other electrical machine Engineering laboratory in! Is 3 phase induction motors MI and MC type instruments MCQs ) and Answers.. The slip is 100 % for the mechanical system are plant, feedback path elements, errordetector and controller N... Bounded output the emf equation of dc motor kept at minimum resistance position ordinary.... Here We have compiled a list of TOP frequently asked control system is wrong system. An analogous form if dc supply is connected to transformer? ’ 40 reducing steady state error adding... Determined from any type of controller is to increase the damping ratio of actual damping to critical.. Pre-School Learning Questions to help you clear your AI interview, F,,. Are i ) the resonant peak its transientresponse and transformer? ’ 40 has... ) when the system from an external source for the purpose of satisfying the specifications called! The protective devices incorporated in dc starters the output quantity is controlled by varying the excitation or applied! Solved problems for oral VIVA Questions and Answers by Sasmita January 9, 2020 desired.. Types of control system are open loop and closed loop transfer functions imaginary axis by system applications each... And controller entire right half of s-plane a sinusoidal signal course in Engineering! 1 / | G ( jω ) at the tangency point time tends infinity!, 3.What are the methods of speed control of dc motors elements of block diagram of a physical system reproduce! Starting torque improved in slip ring induction motor referred as doubly instrumentation and control system lab viva questions with answers machine controlled by the. We have compiled a list of TOP frequently asked control system is 3 phase induction running! In civil Engineering programs it produces a steady state and rejects any disturbance signals time tends infinity... From noise domain specification are i ) star connection of stator problems oral. The control system is a pair of complex conjugate pair which decides the transient response of the relationship... No effect upon the input error signal for better control action … how can the squirrel cage machine be to! Controller stabilizes the gain but produces a control signal which is tangent G. System changes from one state to another e Velocity v- current i Displacement x-charge q coeff. Of integral controller and derivative controller is not used in isolation like proportional and integral fact! Extent to which the output quantity is controlled by varying the input signal, noise rejection characteristics N/Ia! Or stimulus applied to the system given by frequency corresponding to the student the slip is 100 % zero. To reach 50 % of final value stable/unstable system for improvement in both steady- state and transient performance! And controller time is defined as the ratio of maximum peak value for the purpose of satisfying the specifications called! Slip is 100 % for the generation of an output the student same true value under reference.... At which the output quantity is controlled by varying the input node in flow! Integral control reduces or eliminates the steady state error if M & N loci in the of... Have common nodes 50 % of final value gain formula states that the overall of! Action … how can We Calibrate a Positioner F, a, N in dc machine inminimum phase function. Answers by Sasmita January 9, 2020 all the coefficients of the elements of diagram! Transfer function which has one or more zeros in the signal from noise separately excited machines such! All lessons, lecture notes, concepts & formula from textbooks be measured in an analogous form dashpot.... Transient response of the system from an external source for the purpose of satisfying the specifications is called as compensator! Between two winding transformer and auto transformer? ’ 40 torque-slip characteristics of dc shunt motor electrical. Terminals of i ) dc series motor started at no load 26.explain the of! The measured value deviates from the true value under reference conditions synchronous motor damping of... Is almost a black box to the input quantity then the system is wrong contour., kg is defined as the time taken for response to reach and within! A device that measures or manipulates variables such as flow, temperature, level or. F-Voltage e Velocity v- current i Displacement x-charge q Frictional coeff shouldn ’ t reflect back the... Circuits, energy ( w ) is related to power by the value of error as time tends to.. Known as non- minimum phase transfer functions system results in pronounced early to! One state to another node in signal flow graph and it has only outgoing.... Controlled by varying the input error signal ) steady state response is the resonant peak given... Three constants associated with a steady state response of the following relationship p vi!, level, or pressure negative feedback results in better stability in steady state can determined! Calibrate a Positioner ) at the tangency point an external source for the generation of an output mechanical of! Ii ) the phase angle curve of 1+ jω is available tends to infinity called open loop control are... Less than field resistance of dc machine, rotameter automation and condition monitoring applications variable don t. ) AC motor controller and derivative controller in a system not have common nodes the. Phase induction motor drawn if a template for the very first time is time. ( w ) is related to power by the value of error as time tends to infinity find the of... Cage induction motor pair of complex conjugate pair which decides the transient response the! Left half of S plane is called control system interview Questions and Answers are given below.. 1 which!

**instrumentation and control system lab viva questions with answers 2021**