18. 74.Given 4 terminals without indication. 4. Why is the field rheostat of dc motor kept at minimum resistance position and that of generator in maximum resistance position? 12.Define BIBO stability. Define transformer. 17.What is non-minimum phase transfer function? 106 TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. 24.Why is negative feedback invariably preferred in closed loop system? i. Cascade or series compensation ii. Why are single phase induction motors not self starting? 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. 2.What are the two types of compensation? The step signal is a signal whose value changes from zero to A at t= 0 and remains constant at A for t>0. A list of top frequently asked Control System interview questions and answers are given below.. 1) What is meant by System? 9.Why Compensation is necessary in feedback control system? Instrumentation Interview Questions and Answers will guide us now that Instrumentation is the branch of science that deals with measurement and control. What is meant by magnetizing current and working component of current with respect to transformer? In an open loop control system (a) Output is independent of control input (b) Output is dependent on control input 20.What are two contours of Nichols chart? Which of the following statement about the above control system is wrong? What is E and C in autotransformer? Take the Quiz for competitions and exams. 5.List the time domain specifications. 18.What are M circles? 18.Define Steady state error. iii) The bandwidth is given by frequency corresponding to the intersection point of G(jω ) and –3dB M-contour. 4.What are the two segments of Nyquist contour. 2.What are the two major types of control system? 14.What is the necessary and sufficient condition for stability. Relative stability is the degree of closeness of the system, it is an indication of strength or degree of stability. 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. 8. Tutorial of solved problems for oral viva questions & lab exam. Measurements and Instrumentations LAB VIVA Questions :-1. 1.Define Phase lag and phase lead? Required fields are marked *. Identify and analyze errors in measurement. The necessary and sufficient condition for stability is that all of the elements in the first column of the routh array should be positive. 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. 14.What is the difference between AC servomotor and two phase induction motors? 69. Home » EEE VIVA Questions » 400+ TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. What is PD controller? A device inserted into the system for the purpose of satisfying the specifications is called as a compensator. 9. Why is 3 phase induction motor referred as rotating transformer with short-circuited secondary? The basic elements of block diagram are block, branch point and summing point. What is the significance of integral controller and derivative controller in a PID controller? This means that the output is not feedback to the input for correction. Input signal b. Write the torque equation of DC motor. 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. JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid Exam Question Papers 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. Mock Tests (Level I) 3. The two major types of control system are open loop and closed loop. 59.What is the principle of motor, generator and transformer? 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. i. i) Multiplication of magnitude can be in to addition. Tutorial of solved problems for oral viva questions & lab exam. The order of the system can be obtained from the transfer function of the given system. 26.Explain the behaviour of the system when PID controller is used? Multiple Choice Questions; Question & Answers; Pre-school Learning. If the Nyquist plot of the open loop transfer function G(s) corresponding to the nyquist control in the S-plane encircles the critical point –1+j0 in the counter clockwise direction as many times as the number of right half S-plane poles of G(s),the closed loop system is stable. Adding a zero to a system results in pronounced early peak to system response thereby the peak overshoot increases appreciably, 9. What are the effects of adding a zero to a system? Why are synchronous motors not self starting? Why is regulation so important for transformers and alternators? The necessary condition for stability is that all the coefficients of the characteristic polynomial be positive. 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. Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. The bandwidth is a measure of the ability of a feedback system to reproduce the input signal ,noise rejection characteristics and rise time. i. 1. Given transformers A and B with following details: 3. (b) the control action … Force f-voltage e Velocity v- current i Displacement x-charge q Frictional coeff. 50. 28. ii) The resonant frequency is given by the frequency of G(jω ) at the tangency point. 15.What is quadrantal symmetry? Automobile Engineering MCQ eBook (FREE) 10. What is a dominant pole? 33.Explain ratio control system. Explain. F =Md, 20. Such approximation is sufficient if rough information on the frequency response characteristic is needed. Gain margin kg = 1 / | G(jω pc) |. The integral control reduces or eliminates the steady state error. 52. 20. 2. The transmittance is the gain acquired by the signal when it travels from one node to another node in signal flow graph. Control Systems VIVA Questions and Answers :-1. Give the relation between line and phase values of i) star connected network ii) delta connected network. MCQ Practice Tests. Which of the following statement about the above control system is wrong? 68. 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 self excited and separately excited machines? The effect of PD controller is to increase the damping ratio of the system and so the peak overshoot is reduced. The dominant pole is a pair of complex conjugate pair which decides the transient response of the system. a. 76. Advantages and Disadvantages? The Bode plot is the frequency response plot of the transfer function of a system. 15. 53. The cut-off rate indicates the ability to distinguish the signal from noise. 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. manuas686@gmail.com, Sir,can u send me the qns in pdf format @ dipsdeepak08@gmail.com, Your email address will not be published. 70. 2.What are the two major types of control system? Engg. ii. How can the hysteresis loss of any machine be minimized? 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. 15.Define non-touching loop. a. What are the parts of transformer? How will you manage to find the field and armature terminals of i) dc shunt machine ii) dc series machine. determined. This means that the output is not feedback to the input for correction. 1.What is Nyquist contour? Analog Electronics Objective Questions – Set 1 S Bharadwaj Reddy May 18, 2017 May 4, 2019 Instrumentation Tools assists you with a complete guide of objective questions which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to … ii) Frequency domain specifications can be determined from Nichols chart. 20. 13. 27.What is the effect of PI controller on the system performance? What are the methods of speed control of ac motors? Improve the steady state behavior of a system, while nearly preserving its transientresponse. What Are The Functions Of Protective Relays? 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. A system consists of a number of components connected together to perform a specific function. 19.What is the drawback of static coefficients? 3.Define –resonant Peak? In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. 8.What are the basic elements used for modeling mechanical rotational system? iii) It is based on asymptotic approximation. The two major types of control system are open loop and closed loop. 2.What is steady state response? Which is the basic protective device in any circuit? * To get Clear; figures / diagrams, tables / values, answers / explanations and more, download the Control System Unit wise Viva Short Questions and Answers PDF. A linear relaxed system is said to have BIBIO stability if every bounded input results in a bounded output. Proportional controller PI controller PD controller PID controller. It is device that produces a control signal which is proportional to the input error signal. 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 23. A negative phase angle is called phase lag. 7. 3.What is an order of a system. 38. In open loop system. ii. Why is synchronous motor referred as doubly excited machine? What is the advantage of equivalent circuit? Control Systems VIVA Questions :-1.What is control system? Inminimum phase transfer functions, all poles and zeros will lie on the left half of s-plane. JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid - I, September - 2014 Question Paper A ratio control system is the system where secondary flow is hold in some proportion to a primary uncontrollable flow. Question 2. 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. i) Steady state is function of time. ... Block diagram of a simple standard control system is shown below in the figure. The degree of reproducibility among several independent measurements of the same true value under reference conditions. 25. The rules for block diagram reduction technique are framed such that any modification made on the diagram does not alter the input output relation. A frequency responses the steady state response of a system when the input to the system is a sinusoidal signal. Pro: This way, the student becomes acquainted with the various control ex- 11. 12.What is a signal flow graph? How are MI meters used for measuring both ac and dc quantities? 24. What are the protective devices incorporated in DC starters? 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. 43. 5.What are root loci? Which is the basic protective device in any circuit? In a system when the output quantity is controlled by varying the input quantity then the system is called control system. Materials MCQ Ele. The maximum value of the magnitude of closed loop transfer function is called resonant peak. Multiple Choice Questions and Answers By Sasmita January 9, 2020. 72. And Instrument is a device that measures or manipulates variables such as flow, temperature, level, or pressure. 4.Define –Resonant frequency? 63. 42. Why transformers have highest efficiency than any other electrical machine? An arc C2 of infinite radius. The order of a system is the order of the differential equation governing the system. 5. The measurement system consists of a transducing element which converts the quantity to be measured in an analogous form. B: η= 94% & reg: 5.2% Searching for a new job is more difficult know-a-days it can turn to a job is well. Name the parts of dc machine. What do you mean by transformation coefficient? A positive phase angle is called phase lead. What is the use of end rings in squirrel cage induction motor? 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. Name the material used in various parts. What is the secondary side frequency of transformer? Multiple Choice Questions and Answers By Sasmita January 9, 2020. 16.Some Applications where Servo motors are used? JNTU Hyderabad B.Tech Instrumentation and Control in Manufacturing Systems Mid Exam Question Papers. 7.What are the main significances of root locus? 27. 61.How will you reverse the direction of rotation of i) dc motor ii) ac motor? 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. Justify your answer. ii) Steady state can be determined from any type of input. 19.What are the applications of Synchro pair? State-Magnitude criterion. What is meant by power factor? Name the different types of DC and AC starters. 3.Define Relative stability. Looking for a job in Control Systems-Electrical Engineering? 7.What are the basic elements used for modeling mechanical translational system? 35. 23.What are the three constants associated with a steady state error? 44. Control System Interview Questions. Mass, spring and dashpot. Chemical Engineering. 12. The dominant pole is a air of complex conjugate pair which decides the transient response of the system. 22.What are the advantages of Nichols chart? Electrical Lab Viva. Name the material used for armature and core of dc machine. The motors used in automatic control systems or in servomechanism are called servomotors. 4.Define Damping ratio. Why is always the induction motor running with less than the speed of rotating magnetic field? In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. F = B dx /dt, 21. The path taken by the roots of the open loop transfer function when the loop gain is varied from 0 to α are called root loci. i need the solution plz if anyone can provide my ail is cdubey1995@gmail.com The frequency domain specification are i)Resonant peak. 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. Home » CONTROL SYSTEMS LAB VIVA Questions - ECE » 300+ TOP CONTROL SYSTEMS LAB Questions and Answers. 30. 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 domain specifications are i.Delay time ii.Rise time iii.Peak time iv.Peak overshoot. What is ramp signal? i. Lag compensator ii. What are the advantages and disadvantages of autotransformer? 79. Chemical Engineering. 62. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. 8.What are the basic elements used for modeling mechanical rotational system? 1.What is frequency response? Analyze measured data using regression analysis. (a) the control action depends on the size of the system. 40. 14.Define Corner frequency? 56. F = Kx, 23.What is servomechanism? 26. 11.What is the basis for framing the rules of block diagram reduction technique? ii)Resonant frequency. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. 23.For reducing Steady State error which type of controller is used? The negative feedback results in better stability in steady state and rejects any disturbance signals. A list of top frequently asked Control System interview questions and answers are given below.. 1) What is meant by System? What will happen when the slip is 100% and zero? A: η= 96% & reg: 5.8% 39. Damping ratio is defined as the ratio of actual damping to critical damping. Classify them according to the iv) The phase angle curves can be easily drawn if a template for the phase angle curve of Answer: Order of the system is defined as the order of the differential … 2.What are the two major types of control system? 4.Define closed loop control system. 73. 15.Compare AC servo motor and DC servo motors? 2. A synchro is a device used to convert an angular motion to an electrical signal or vice-versa. What is mutual inductance? 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 41.What is regulation with respect to i)transformer ii)alternator What is the use of commutator and brushes? Course Structure. What are the methods of speed control of dc motors? 25.Which type of controller anticipates the error? 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. Searching for a new job is more difficult know-a-days it can turn to a job is well. Syllabus. 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. It is used to fabricate a wide range of instruments and equipment for instrumentation, process controls, automation and condition monitoring applications. 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. Question No. 6.Define Cut-off rate? 22.Why Derivative Controller is not used in isolation like Proportional and Integral? 6.Define Delay time. How is the eddy current loss minimized in dc machine? Positional error constant Velocity error constant Acceleration error constant, 24.What are the main advantages of generalized error co-efficients? 11.What is the need for a controller? A system consists of a number of components connected together to perform a specific function. The basic elements of block diagram are block, branch point and summing point. A Bode plot consists of two graphs. i) The resonant peak is given by the value of .contour which is tangent to G(jω ) locus. What is LPF, UPF and ZPF? ... Control System MCQ Ele. 16. The steady state response is the response of the system when it approaches infinity. Measurement and Instrumentation (MI) Lab - Viva Question Measurement and Instrumentation Lab - VIVA QUESTIONS. Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. The following section consists of Chemistry Multiple Choice questions on Process Control and Instrumentation. JNTUH. Your email address will not be published. 8. 54. The frequency at which resonant peak occurs is called resonant frequency. Give The Consequences Of Short Circuit? 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. 14. The rules for block diagram reduction technique are framed such that any modification made on the diagram does not alter the input output relation. The transient response is the response of the system when the system changes from one state to another. 2. The two types of analogies for the mechanical system are Force voltage and force current analogy. 22. The control system in which the output quantity has no effect upon the input quantity are called open loop control system. Multiple Choice Questions and Answers on Control Systems. 29. 5.What is the use of lag compensator? 21.What is Integral Controller? This is often used to control the dynamic behavior of the 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. alekhyach25@gmail.com, sir cn u send d pdf file to my Gmail….. Input signal b. It includes eighteen laboratory procedures that cover the essential properties of … Calibration of Pressure Gauges, temperature, LVDT, capacitive transducer, rotameter. 34. 6.What is a dominant pole? (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Control System Interview Questions. The time taken for the response to reach the peak value for the first time is peak time. 19.What is Nichols chart? 1.What is transient response? 1+ jω is available. The time taken for response to raise from 0% to 100% for the very first time is rise time. 47. What is M, L, C, and V in wattmeter? 11.Explain the mechanical characteristics of DC shunt motor using electrical characteristics and N/Ia characteristics. Your email address will not be published. 1.What is control system? 16.Write Masons Gain formula. The servomechanism is a feedback control system in which the output is mechanical position (or time derivatives of position velocity and acceleration,). 16.What is limitedly stable system? 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. 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. Why transformers and alternators are rated with kVA? 32. 17.Why derivative controller is not used in control systems? Lead compensation is employed for stable/unstable system for improvement in transient- state performance. 12.What is Bode plot? 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? 8.What is Compensation? What do you mean by complex power? The phase margin ,γ is the amount of phase lag at the gain cross over frequency required to bring system to the verge of instability. The controller is provided to modify the error signal for better control action, 12.What are the different types of controllers? * To get Clear; figures / diagrams, tables / values, answers / explanations and more, download the Control System Unit wise Viva Short Questions and Answers PDF. 3. The contour that encloses entire right half of S plane is called nyquist contour. Mass, spring and dashpot. Feedback compensation or parallel compensation, 3.What are the three types of compensators? ii) A simple method for sketching an approximate log curve is available. 45. The extent to which the measured value deviates from the true value of the measurand. 16.What is minimum phase system? A ratio control system is characterized by the fact that variations in the secondary variable don’t reflect back on the primary variable. Justify mathematically. Why is series motor best suited for traction applications? Control Systems objective questions (MCQs) and answers for competitive & university exams. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. Question 1. Source is the input node in the signal flow graph and it has only outgoing branches. 5.What are the components of feedback control system? What is the need for starters? The control system itself has been built by someone else and is almost a black box to the student. starting methods. What is the difference between two winding transformer and auto transformer? Lead compensator iii. 26.What is servomotor? Using root locus technique the range of values of K, for as table system can be 78.When can the squirrel cage machine be loaded to its fullest capacity? 60. Multiple Choice Questions and Answers on Control Systems. Why shouldn’t dc series motor started at no load? Control Systems objective questions (MCQs) and answers for competitive & university exams. How Can We Calibrate A Positioner? 17. 25.What is synchro? 7.Define –Gain Margin? This document is highly rated by Electrical Engineering (EE) students and has been viewed 9838 times. 3.Define open loop control system. Focus control 8. Lag compensation is employed for a stable system for improvement in steady state performance. The main root locus technique is used for stability analysis. Write the emf equation of DC and AC machine. What is step signal? 64. 1.What is control system? Tag: instrumentation and control systems lab viva questions Interview Questions for Instrumentation Engineer Freshers S Bharadwaj Reddy February 19, 2017 October 28, 2019 4.What are the uses of lead compensator? What are the disadvantages of low power factor? Draw the torque-slip characteristics of 3 phase induction motor and explain. Which transformer will you select? These circles are called N circles. The two types of analogies for the mechanical system are Force voltage and force current analogy. 49. the commonly used test input signals in control system are impulse step ramp acceleration and sinusoidal signals. The steady state error is defined as the value of error as time tends to infinity. The frequency at which the two asymptotic meet in a magnitude plot is called corner frequency. 31. Cathode ray tube 9. 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.
How To Get Into Johns Hopkins Medical School Reddit, Spa Retail Ideas, Ooty Homestay With Kitchen, Jo Nesbo Latest Book, Energy Transformations Interactive, Money Order Printing Software, Grandmaster Wolven Armor, Donkey Kong '94 Price, Oil Well Cement Price In Ghana,