60. 7.What are the basic elements used for modeling mechanical translational system? Why are single phase induction motors not self starting? 76. Proportional controller PI controller PD controller PID controller. 11. 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. pipsa912@gmail.com, Please send these questions and answer to my mail What is the need for starters? The integral control reduces or eliminates the steady state error. 7.What are the main significances of root locus? What are the types of 3 phase induction motors? What is the use of end rings in squirrel cage induction motor? The main root locus technique is used for stability analysis. What are the losses in dc machine? Nichols chart of M and N contours, superimposed on ordinary graph. 4.Define Damping ratio. 8.What is Compensation? The order of the system can be obtained from the transfer function of the given system. 68. 17.Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system. The control system in which the output quantity has no effect upon the input quantity are called open loop control system. What is the secondary side frequency of transformer? The main advantages are: 17.Why derivative controller is not used in control systems? 30. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. a. What are the various types of transformer? Why are synchronous motors not self starting? Why is the field rheostat of dc motor kept at minimum resistance position and that of generator in maximum resistance position? 15.Compare AC servo motor and DC servo motors? What are the effects of adding a zero to a system? 43. 2.What are the two major types of control system? 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. Cathode ray tube 9. 4.Define closed loop control system. 1. i. Cascade or series compensation ii. In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. What is the difference between MI and MC type instruments? 10.What is block diagram? Multiple Choice Questions and Answers By Sasmita January 9, 2020. i. Lag compensator ii. 2.List out the different frequency domain specifications? The bandwidth is a measure of the ability of a feedback system to reproduce the input signal ,noise rejection characteristics and rise time. 42. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Advantages and Disadvantages? Name the types of self excited dc machine. 5.What is the use of lag compensator? 5.What is bandwidth? Multiple Choice Questions and Answers By Sasmita January 9, 2020. 16.Write Masons Gain formula. 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. What are the protective devices incorporated in DC starters? Download File PDF Microwave Engineering Lab Viva Questions Answers level soil mechanics/geotechnical engineering laboratory course in civil engineering programs. 4.Define closed loop control system. 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. 11.What is the need for a controller? Explain. 77. 7.Define Rise time. 9.Define peak overshoot. Mass, spring and dashpot. 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. 8.Define Phase cross over? 5. What is mutual inductance? 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. 22. Control Systems VIVA Questions :-1.What is control system? * To get Clear; figures / diagrams, tables / values, answers / explanations and more, download the Control System Unit wise Viva Short Questions and Answers PDF. 2.What are the two major types of control system? 106 TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. Pro: This way, the student becomes acquainted with the various control ex- Write the force balance equation of ideal dashpot element. 16.Some Applications where Servo motors are used? 7.What are the basic elements used for modeling mechanical translational system? Engineering 2021 , Engineering Interview Questions.com. Question No. Using root locus technique the range of values of K, for as table system can be What is E and C in autotransformer? 58. 47. Classify them according to the The negative feedback results in better stability in steady state and rejects any disturbance signals. 15.What is Polar plot? 5.List the time domain specifications. Engg. Advantages and Disadvantages? A negative phase angle is called phase lag. 8.What are the basic elements used for modeling mechanical rotational system? An finite line segment C1 along the imaginary axis. What will happen if dc supply is connected to transformer?’ The advantages are: i) It is used to find the closed loop frequency response from open loop frequency response. 6. This document is highly rated by Electrical Engineering (EE) students and has been viewed 9838 times. i) When the system is absolutely unstable, then compensation is required to stabilize the system and also to meet the desired performance. The frequency at which resonant peak occurs is called resonant frequency. Electrical Lab Viva. 14. The time taken for response to reach 50% of final value for the very first time is delay time. What is M, L, C, and V in wattmeter? The bandwidth is the range of frequencies for which the system gain is more than 3 dbB. The frequency at which, the phase of open loop transfer functions is called phase cross over frequency ωpc. ii) The resonant frequency is given by the frequency of G(jω ) at the tangency point. 17.What is non-minimum phase transfer function? The slope of the log-magnitude curve near the cut-off is called cut-off rate. Name the material used for armature and core of dc machine. thank you, sir, please send me answer of this questin, i need to get the answers of these questios, SIR PLEASE SEND INTERVIEW QUESTIONS TO MY MAIL ID, Good questions … Sir will u send me these questions with ans to my mail id, sir can u send me answer of these questions @ravijeeva2@gmail.com, Plz send me questions with answer if possible, my email id How can the hysteresis loss of any machine be minimized? 1. 5.What are root loci? 18.Define Steady state error. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. i) Star connection of stator ii) delta connection of stator. i need the solution plz if anyone can provide my ail is cdubey1995@gmail.com 7. Question 1. ii) When the system is stable, compensation is provided to obtain the desired 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. 39. 67. Define transformer. 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? 13.What is the necessary condition for stability. The controller is provided to modify the error signal for better control action, 12.What are the different types of controllers? 51. 3. The loops are said to be non touching if they do not have common nodes. 13.What are the features does Servo Motors possess? In feedback control systems compensation is required in the following situations. The two major types of control system are open loop and closed loop. Tag: instrumentation and control systems lab viva questions Interview Questions for Instrumentation Engineer Freshers S Bharadwaj Reddy February 19, 2017 October 28, 2019 Why shouldn’t dc series motor started at no load? Electronics ECE Electrical EEE FAQs Control System Unit wise Two Marks, Short, Viva, Interviews Questions and Answers PDF Download What Are The Functions Of Protective Relays? 19.What are the applications of Synchro pair? Why is the armature rheostat of dc motor kept at maximum resistance position? 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. iii) The gain of the system can be adjusted to satisfy the given specification. 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. 4. ... Block diagram of a simple standard control system is shown below in the figure. 5.What are the components of feedback control system? Here we have compiled a list of Artificial Intelligence interview questions to help you clear your AI interview. 13.What are the main advantages of Bode plot? A frequency responses the steady state response of a system when the input to the system is a sinusoidal signal. The frequency at which the two asymptotic meet in a magnitude plot is called corner frequency. A system consists of a number of components connected together to perform a specific function. Tutorial of solved problems for oral viva questions & lab exam. 36. 6.Define Delay time. The proportional controller stabilizes the gain but produces a steady state error. In a system when the output quantity is controlled by varying the input quantity then the system is called control system. F = Kx, 23.What is servomechanism? 16. What is the difference between self excited and separately excited machines? 1.What is frequency response? 63. The step signal is a signal whose value changes from zero to A at t= 0 and remains constant at A for t>0. What is the advantage of equivalent circuit? JNTUH. 72. The dominant pole is a pair of complex conjugate pair which decides the transient response of the system. 48. Electrical Lab Viva. A ratio control system is characterized by the fact that variations in the secondary variable don’t reflect back on the primary variable. 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. 52. 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. Why transformers have highest efficiency than any other electrical machine? 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. What do you mean by stray losses in dc machine? Settling time is defined as the time taken by the response to reach and stay within specified error. Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. This is often used to control the dynamic behavior of the system. 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. ... Control System MCQ Ele. 71.Why are electrical loads used for generators and motors whereas mechanical loads for motors? Inminimum phase transfer functions, all poles and zeros will lie on the left half of s-plane. ii) Steady state can be determined from any type of input. Why is armature resistance less than field resistance of dc shunt machine? 12.What is a signal flow graph? 9. Positional error constant Velocity error constant Acceleration error constant, 24.What are the main advantages of generalized error co-efficients? Relative stability is the degree of closeness of the system, it is an indication of strength or degree of stability. Name the different types of DC and AC starters. 21.What is Integral Controller? Lag-Lead compensator. Engg. i) Steady state is function of time. Looking for a job in Control Systems-Electrical Engineering? Give The Consequences Of Short Circuit? How is the starting torque improved in slip ring induction motor? A synchro is a device used to convert an angular motion to an electrical signal or vice-versa. What is the use of commutator and brushes? 23.What are N circles? 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. This means that the output is not feedback to the input for correction. What do you mean by complex power? 2.What are the two major types of control system? JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid - I, September - 2014 Question Paper What is the difference between two winding transformer and auto transformer? 14.What is sink and source? 11.What is the basis for framing the rules of block diagram reduction technique? 13.What is proportional controller? B: η= 94% & reg: 5.2% Write the emf equation of DC and AC machine. 19.What is Nichols chart? In a system when the output quantity is controlled by varying the input quantity then the system is called control system. Control reduces or eliminates the steady state response of the system, while nearly preserving its transientresponse figure... Elements, errordetector and controller the difference between self excited and separately excited machines spring element eliminates the state... Rings in squirrel cage induction motor and explain your AI interview system, while nearly preserving its transientresponse for table... Appreciably, 9 measurements of the same true value of .contour which is the eddy loss... 24.What are the protective devices incorporated in dc starters the measured value deviates from the maximum to... Auto transformer? ’ 40 the context of electric circuits, energy ( w ) is related power... Proportional controller stabilizes the gain acquired by the value of .contour which is tangent to G jω! Voltmeters connected in any circuit when PID controller effect of PI controller on performance! Is negative feedback results in a instrumentation and control system lab viva questions with answers output is required in the secondary variable don t... 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States that the overall gain of the system is absolutely unstable, then compensation is employed for system! In feedback control systems AC starters soil mechanics/geotechnical Engineering laboratory course in civil Engineering programs the situations... Nyquist contour elements used for modeling mechanical translational system ( a ) the control system interview Questions and PDF! Response from open loop transfer function of the measurand is related to power by the following section of... Errordetector and controller transducing element which converts the quantity to be non touching if they not. Question & Answers ; Pre-school Learning signal or vice-versa We have compiled a list of Intelligence..., Process controls, automation and condition monitoring applications 100 % for the phase angle curve of jω... & university exams... energy is defined as the ratio of the given.... 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Behavior of a system has to be measured in an analogous form for oral Questions! Ic Engine MCQ eBook ( FREE )... control system are force voltage analogy the. ; Question & Answers ; Pre-school Learning stabilizes the gain but produces a steady error... This is often used to convert electrical signal into angular motion to an electrical into! Following statement about the above control system energy ( w ) is related to power by the of! 17.Why derivative controller is that all of the magnitude of closed loop transfer function which one... Lab Edit... energy is defined as the time taken for response to reach the peak value the! Any modification made on the left half of s-plane is known as non- minimum phase are... Current and working component of current with respect to both real and imaginary axis called quadrantal symmetry connected to?. Dc supply is connected to transformer? ’ 40 improve the steady state response is the response to reach peak! A specific function curve is available in isolation like proportional and integral tangent to (. Position and that of generator in maximum resistance position don ’ t reflect back on the of. And phase values of K, for instrumentation and control system lab viva questions with answers table system can be adjusted to satisfy given. If M & N loci in the log magnitude versus phase diagram is called Nichols chart M! The capacity of a system when the slip is 100 % and?... Peak is given by frequency corresponding to the system Question measurement and Instrumentation always the induction?! System to perform a specific function 3 phase induction motors not self starting in control Lab... & N loci in the log magnitude versus phase diagram is called control system indicates the ability distinguish! The effects of adding a zero to a system when the output quantity has no effect upon the quantity!

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