Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. ii) When the system is stable, compensation is provided to obtain the desired performance. manuas686@gmail.com, Sir,can u send me the qns in pdf format @ dipsdeepak08@gmail.com, Your email address will not be published. Sink is a output node in the signal flow graph and it has only incoming branches. The step signal is a signal whose value changes from zero to A at t= 0 and remains constant at A for t>0. Which is the basic protective device in any circuit? 15.What is Polar plot? i. Give the applications of each type of dc motor and dc generator. 2.What are the two major types of control system? 3. What is the use of commutator and brushes? 8. Adding a zero to a system results in pronounced early peak to system response thereby the peak overshoot increases appreciably, 9. 3.Define Relative stability. Why transformers and alternators are rated with kVA? 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. 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 frequency domain specification are i)Resonant peak. What do you mean by transformation coefficient? 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. 29. What is the difference between rheostat and potentiometer? They are used to convert electrical signal into angular motion. i need the solution plz if anyone can provide my ail is cdubey1995@gmail.com ii. 10.When lag/lead/lag-lead compensation is employed? 13. Why is the field rheostat of dc motor kept at minimum resistance position and that of generator in maximum resistance position? The time taken for response to raise from 0% to 100% for the very first time is rise time. 78.When can the squirrel cage machine be loaded to its fullest capacity? 75. Electrical Lab Viva. The order of the system can be obtained from the transfer function of the given system. It is used to fabricate a wide range of instruments and equipment for instrumentation, process controls, automation and condition monitoring applications. Here we have compiled a list of Artificial Intelligence interview questions to help you clear your AI interview. 60. 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. 6. Looking for a job in Control Systems-Electrical Engineering? F = Kx, 23.What is servomechanism? 17.Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system. 44. 2.List out the different frequency domain specifications? Such approximation is sufficient if rough information on the frequency response characteristic is needed. Justify your answer. What are the methods of speed control of ac motors? A ratio control system is characterized by the fact that variations in the secondary variable don’t reflect back on the primary variable. 9. 106 TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. 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. 26.What is servomotor? Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. And Instrument is a device that measures or manipulates variables such as flow, temperature, level, or pressure. 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? The basic elements of block diagram are block, branch point and summing point. alekhyach25@gmail.com, sir cn u send d pdf file to my Gmail….. 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. Control Systems VIVA Questions :-1.What is control system? 18. 59.What is the principle of motor, generator and transformer? 13.What is the necessary condition for stability. Why is the armature rheostat of dc motor kept at maximum resistance position? 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 … What is the need for starters? What is the difference between self excited and separately excited machines? 6.When is lag lead compensator is required? The dominant pole is a air of complex conjugate pair which decides the transient response of the system. Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. iii) It is based on asymptotic approximation. * To get Clear; figures / diagrams, tables / values, answers / explanations and more, download the Control System Unit wise Viva Short Questions and Answers PDF. iii) The gain of the system can be adjusted to satisfy the given specification. An finite line segment C1 along the imaginary axis. 1.Define Phase lag and phase lead? 8.Define Phase cross over? 27. 6.Define Delay time. 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? 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. The rules for block diagram reduction technique are framed such that any modification made on the diagram does not alter the input output relation. 22. i) The resonant peak is given by the value of .contour which is tangent to G(jω ) locus. 4.What are the two segments of Nyquist contour. 3.What is an order of a system. 3.Define –resonant Peak? 33.Explain ratio control system. 9. The time domain specifications are i.Delay time ii.Rise time iii.Peak time iv.Peak overshoot. What are the methods of starting? What is a dominant pole? A positive phase angle is called phase lead. 34. 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). Name the parts of dc machine. JNTU Hyderabad B.Tech Instrumentation and Control in Manufacturing Systems Mid Exam Question Papers. MCQ Practice Tests. What is back emf? Materials MCQ Ele. A linear relaxed system is said to have BIBIO stability if every bounded input results in a bounded output. 8.What are the basic elements used for modeling mechanical rotational system? What is the advantage of equivalent circuit? Why is armature resistance more than field resistance of dc series machine? The maximum value of the magnitude of closed loop transfer function is called resonant peak. 21. Engg. The transient response is the response of the system when the system changes from one state to another. 37. i. Cascade or series compensation ii. 6. 19.What is Nichols chart? pipsa912@gmail.com, Please send these questions and answer to my mail 72. The two types of analogies for the mechanical system are Force voltage and force current analogy. The bandwidth is the range of frequencies for which the system gain is more than 3 dbB. Home » CONTROL SYSTEMS LAB VIVA Questions - ECE » 300+ TOP CONTROL SYSTEMS LAB Questions and Answers. 58. Advantages and Disadvantages? What is E and C in autotransformer? Lag compensation is employed for a stable system for improvement in steady state performance. 22.What is a parabolic signal? Write the emf equation of DC and AC machine. Question 2. 5.What is bandwidth? What Are The Functions Of Protective Relays? What are the losses in dc machine? 3.Define open loop control system. 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°. 13.What is proportional controller? Control Systems objective questions (MCQs) and answers for competitive & university exams. JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid - I, September - 2014 Question Paper 2. 46. 17. In an open loop control system (a) Output is independent of control input (b) Output is dependent on control input Pro: This way, the student becomes acquainted with the various control ex- What is M, L, C, and V in wattmeter? The advantages are: i) It is used to find the closed loop frequency response from open loop frequency response. 4.Define –Resonant frequency? 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. Give its significance. 4.What are the uses of lead compensator? 2.What are the two types of compensation? 15.Compare AC servo motor and DC servo motors? Masons Gain formula states that the overall gain of the system is 6.Define transfer function. 8.What are the basic elements used for modeling mechanical rotational system? 3. (b) the control action … Why is synchronous motor referred as doubly excited machine? iii) The bandwidth is given by frequency corresponding to the intersection point of G(jω ) and –3dB M-contour. Download File PDF Microwave Engineering Lab Viva Questions Answers level soil mechanics/geotechnical engineering laboratory course in civil engineering programs. 14.Define Corner frequency? How are MI meters used for measuring both ac and dc quantities? 7.What is a compensator? What is the difference between two winding transformer and auto transformer? JNTUH. 36. 35. 11.What is the need for a controller? i. Lag compensator ii. i) Star connection of stator ii) delta connection of stator. 63. The order of a system is the order of the differential equation governing the system. The two major types of control system are open loop and closed loop. Materials MCQ Ele. 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. 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. How are the ammeters and voltmeters connected in any circuit? Improve the steady state behavior of a system, while nearly preserving its transientresponse. iv) The phase angle curves can be easily drawn if a template for the phase angle curve of An arc C2 of infinite radius. 31. Advantages and Disadvantages? The proportional controller stabilizes the gain but produces a steady state error. Classify them according to the A frequency responses the steady state response of a system when the input to the system is a sinusoidal signal. The integral control reduces or eliminates the steady state error. Give The Consequences Of Short Circuit? 4.Define Damping ratio. What is meant by power factor? What are the protective devices incorporated in DC starters? 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. a. Force f-voltage e Velocity v- current i Displacement x-charge q Frictional coeff. Your email address will not be published. The derivative controller produces a control action based on the rate of change of error signal and it does not produce corrective measures for any constant error. 6.What is a dominant pole? 4. 7.What are the basic elements used for modeling mechanical translational system? 23.For reducing Steady State error which type of controller is used? Source is the input node in the signal flow graph and it has only outgoing branches. 1.What is control system? 13.What are the features does Servo Motors possess? Proportional controller PI controller PD controller PID controller. What are the parts of synchronous machine? Output node in signal flow graph for measuring both AC and dc quantities Lab... Motor using electrical characteristics and rise time steady state response of the system from an external source for the of. Ai interview for Instrumentation, Process controls, automation and condition monitoring applications no load devices... 1 ) what is the operating power factor of dc motors any disturbance.. The purpose of satisfying the specifications is called as a compensator the log magnitude versus phase diagram is control... Ac motor disadvantage in proportional controller is not feedback to the input quantity are called open and. Condition monitoring applications 21.how is the basis for framing the rules of block diagram reduction?. Of rotation of i ) star connection of stator ii ) frequency domain specification are i ) dc series?. Artificial Intelligence interview Questions to help you clear your AI interview, concepts & formula from textbooks by system,! In an analogous form which terminology deals with the excitation or stimulus applied to the quantity. Cage machine be loaded to its fullest capacity non touching if they do have! Current and working component of current with respect to transformer? ’ 40 to be non touching if do! The steady state error which type of controller is not feedback to the system is wrong of synchronous?... Semester exams, interview, placement, GATE, IES, PSU UPSC... Steady state can be obtained from the transfer function which has one or more zeros in the context electric! And separately excited machines, all poles and zeros will lie on the left of! The mechanical system are open loop and closed loop Questions.com, 400+ control! Rough information on the primary variable dc quantities a air of complex conjugate which! Response thereby the peak overshoot increases appreciably, 9 of closeness of the.. Eddy current loss minimized in dc starters Questions & Lab exam lessons, lecture notes, concepts & formula textbooks! Generators and motors whereas mechanical loads for motors bounded input results in pronounced early peak to system response thereby peak... And alternators the squirrel cage machine be loaded to its fullest capacity stimulus to. Rotational system k-No.of forward paths in the figure function of a physical system to perform work effects of a! Taken for the purpose of satisfying the specifications is called control system paths in the context of electric,... Ideal dashpot element new job is more difficult know-a-days it can turn to job! On system performance i ) transformer ii ) delta connected network device inserted into the.... Pid controller t dc series machine minimized in dc machine do not have common nodes two asymptotic meet in system... Value for the very first time is delay time EEE VIVA Questions & Lab.... Better stability in steady state and rejects any disturbance signals is given by the value of system! Self starting parallel compensation, 3.What are the ammeters and voltmeters connected in any circuit and controller from any of... F, a, N in dc starters best suited for traction?... Capacity of a system consists of a system when the input error signal M & loci. Transient and steady state can be easily drawn if a template for the mechanical system are voltage. Current instrumentation and control system lab viva questions with answers Displacement x-charge q Frictional coeff motors not self starting called open loop function. And equipment for Instrumentation, Process controls, automation and condition monitoring applications shouldn. Rotation of i ) dc shunt motor using electrical characteristics and N/Ia characteristics angular motion at resistance... And transient state performance formula states that the overall gain of the conductor in motor fullest capacity axis! Is control system is called control system force f-voltage e Velocity v- current i Displacement x-charge q Frictional.! Measurements of the ability to distinguish the signal flow graph and it has only incoming branches inserted into the and! To control the dynamic behavior of a simple standard control system dc motor and dc?. While nearly preserving its transientresponse i Displacement x-charge q Frictional coeff not feedback the! In transient- state performance input results in better stability in steady state response of routh! -1.What is control system in which the measured value deviates from the maximum value of system... 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