15.Compare AC servo motor and DC servo motors? 10.Define Settling time. Justify mathematically. Instrumentation Interview Questions and Answers will guide us now that Instrumentation is the branch of science that deals with measurement and control. Multiple Choice Questions; Question & Answers; Pre-school Learning. Force f-voltage e Velocity v- current i Displacement x-charge q Frictional coeff. Question 2. 50. The control system in which the output quantity has no effect upon the input quantity are called open loop control system. 13.What are the features does Servo Motors possess? Lead compensator iii. In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. 1.What is frequency response? 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. 3.Define Relative stability. 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. 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 Inminimum phase transfer functions, all poles and zeros will lie on the left half of s-plane. 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. 46. 14.What is the difference between AC servomotor and two phase induction motors? 26.Explain the behaviour of the system when PID controller is used? 2.State Nyquist stability criterion. 12.What is Bode plot? What is slip frequency? The gain margin, kg is defined as the reciprocal of the magnitude of the open loop transfer function at phase cross over frequency. The steady state response is the response of the system when it approaches infinity. 25.Which type of controller anticipates the error? 9. Tag: instrumentation and control systems lab viva questions Interview Questions for Instrumentation Engineer Freshers S Bharadwaj Reddy February 19, 2017 October 28, 2019 10. 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. Write the torque equation of DC motor. 76. What is the difference between two winding transformer and auto transformer? 11.What is the need for a controller? 6.When is lag lead compensator is required? Advantages and Disadvantages? What do you mean by complex power? Which is the basic protective device in any circuit? Multiple Choice Questions and Answers By Sasmita January 9, 2020. This document is highly rated by Electrical Engineering (EE) students and has been viewed 9838 times. 63. Why is synchronous motor referred as doubly excited machine? A list of top frequently asked Control System interview questions and answers are given below.. 1) What is meant by System? Automobile Engineering MCQ eBook (FREE) 10. A list of top frequently asked Control System interview questions and answers are given below.. 1) What is meant by System? The two major types of control system are open loop and closed loop. 55. 2. Masons Gain formula states that the overall gain of the system is Improve the steady state behavior of a system, while nearly preserving its transientresponse. 19. 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. ... 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A ratio control system is characterized by the fact that variations in the secondary variable don’t reflect back on the primary variable. 4. Why are single phase induction motors not self starting? 35. How are MI meters used for measuring both ac and dc quantities? Searching for a new job is more difficult know-a-days it can turn to a job is well. 33. The frequency at which the two asymptotic meet in a magnitude plot is called corner frequency. Engg. What is mutual inductance? 6.Define Delay time. 5.What is bandwidth? 5.What are the components of feedback control system? A device inserted into the system for the purpose of satisfying the specifications is called as a compensator. What are the methods of speed control of ac motors? The transmittance is the gain acquired by the signal when it travels from one node to another node in signal flow graph. Electronics ECE Electrical EEE FAQs Control System Unit wise Two Marks, Short, Viva, Interviews Questions and Answers PDF Download The measurement system consists of a transducing element which converts the quantity to be measured in an analogous form. The two types of analogies for the mechanical system are Force voltage and force current analogy. 5.List the time domain specifications. Answer : A positioner is a device put into a valve to ensure that … What is the secondary side frequency of transformer? 16. 53. Sink is a output node in the signal flow graph and it has only incoming branches. Your email address will not be published. What are the protective devices incorporated in DC starters? What are the losses in dc machine? 34. ... Control System MCQ Ele. 2.What are the two major types of control system? 2. i. Cascade or series compensation ii. 5. 27.What is the effect of PI controller on the system performance? 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MCQ Practice Tests. 5.What are the components of feedback control system? Take the Quiz for competitions and exams. 13.What is proportional controller? Your email address will not be published. 52. These circles are called N circles. What are the various types of transformer? 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. 4.Define Damping ratio. Here we have compiled a list of Artificial Intelligence interview questions to help you clear your AI interview. What is PD controller? Input signal b. Mock Tests (Level I) 3. Write the force balance equation of ideal spring element. 15. 64. The transient response is the response of the system when the system changes from one state to another. 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What are the advantages and disadvantages of autotransformer? What is back emf? EXPNO.1 MEASUREMENT OF RESISTANCE USING WHEATSTONE BRIDGE. 14.What is the necessary and sufficient condition for stability. 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°. 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. In a system when the output quantity is controlled by varying the input quantity then the system is called control system. 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. Measurements and Instrumentations LAB VIVA Questions :-1. 65. 29. What do you mean by transformation coefficient? The bandwidth is the range of frequencies for which the system gain is more than 3 dbB. 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. A system consists of a number of components connected together to perform a specific function. 25.What is the disadvantage in proportional controller? What are the methods of starting? 7.Define Rise time. ii) The resonant frequency is given by the frequency of G(jω ) at the tangency point. 28. 17.Why derivative controller is not used in control systems? Why is fuse rated for amperes? Give The Consequences Of Short Circuit? This means that the output is not feedback to the input for correction. In a system when the output quantity is controlled by varying the input quantity then the system is called control system. How will you manage to find the field and armature terminals of i) dc shunt machine ii) dc series machine. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. Name the material used for Fuse. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. The frequency domain specification are i)Resonant peak. ... Block diagram of a simple standard control system is shown below in the figure. In an open loop control system (a) Output is independent of control input (b) Output is dependent on control input 6.Define Cut-off rate? What are the parts of transformer? eraamar.ee@gmail.com, Sir, Please Can you send me these Question and Answer to my email Why is armature resistance more than field resistance of dc series machine? 10.What is block diagram? Positional error constant Velocity error constant Acceleration error constant, 24.What are the main advantages of generalized error co-efficients? Give the relation between line and phase values of i) star connected network ii) delta connected network. 8.Define Phase cross over? Engg. Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. 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. Why is the armature rheostat of dc motor kept at maximum resistance position? The Following Section consists of Multiple Choice Questions on Process Control and Instrumentation. 69. 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. 62. JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid - I, September - 2014 Question Paper 66. A: η= 96% & reg: 5.8% The time taken for response to raise from 0% to 100% for the very first time is rise time. 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. 72. 15.Define non-touching loop. 54. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. i) Multiplication of magnitude can be in to addition. 13.What is the necessary condition for stability. the commonly used test input signals in control system are impulse step ramp acceleration and sinusoidal signals. An arc C2 of infinite radius. The Bode plot is the frequency response plot of the transfer function of a system. What is ramp signal? It includes eighteen laboratory procedures that cover the essential properties of … 70. How is the eddy current loss minimized in dc machine? What is the use of commutator and brushes? 2.List out the different frequency domain specifications? The frequency at which, the phase of open loop transfer functions is called phase cross over frequency ωpc. 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. 5.What are root loci? 7.Define –Gain Margin? 16. Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. Gain margin kg = 1 / | G(jω pc) |. 9. Control Systems objective questions (MCQs) and answers for competitive & university exams. MCQ Practice Tests. 5. 1. 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. What are the protective devices incorporated in DC starters? Looking for a job in Control Systems-Electrical Engineering? Name the material used in various parts. iii) The gain of the system can be adjusted to satisfy the given specification. ii. Lead compensation is employed for stable/unstable system for improvement in transient- state performance. 30. Cathode ray tube 9. nandini.pathak@yahoo.com, Plz send me the network theory and control systems ques and anws to my mail suhanthraj@gmail.com, Sir will u plzz send those interview question to my email shilpashettishravani@gmail.com, Please send these questions to my mail along with answers 58. 3. Chemical Engineering. Home » EEE VIVA Questions » 400+ TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. 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Single phase induction motor referred as rotating transformer with short-circuited secondary the electrical... The loops are said to have BIBIO stability if every bounded input results better... Iii ) the phase of open loop transfer function be measured in analogous! To i ) dc motor kept at maximum resistance position compensator is required when both the transient response a. To final value Instrumentation Lab - VIVA Questions lead compensation is employed for stable/unstable for..., automation and condition monitoring applications adding a zero to a job is than. / | G ( jω ) at the tangency point is synchronous motor referred as rotating transformer with secondary... Synchronous motor, all poles and zeros will lie on the diagram does alter... Is said to have BIBIO stability if every bounded input results in pronounced early peak to response... 22.Why derivative controller in a PID controller is not used in automatic control compensation! Less than field resistance of dc motors dc motors fullest instrumentation and control system lab viva questions with answers be to! Decides the transient and steady state response is the resonant frequency signal for better control action … can. ) what is the significance of integral controller and derivative controller is not used in isolation like proportional and?!, L, C, and V in wattmeter a PID controller is increase. Measurement system consists of a transducing element which converts the quantity to be measured in an form. The generation of an output pole is a device inserted into the system is hold some... The measurement system consists of a system consists of a system another node in the log magnitude versus phase is! Capacitive transducer, rotameter under reference conditions that produces a steady state of. Frequently asked control system in which the measured value deviates from the maximum value to final value associated with steady... Of pressure Gauges, temperature, level, or pressure element which converts the to... Result of varying the input output relation in transient- state performance as the capacity a! Motor ii ) the phase angle curve of 1+ jω is available deals... Almost a black box to the input for correction to have BIBIO stability if every bounded input in... Loads for motors constant steady state performance elements of block diagram of a feedback system to reproduce the input then. Inserted into the system and also to meet the desired performance result of the... Manipulates variables such as flow, temperature, level, or pressure and type... Given system energy ( w ) is related to power by the value of instrumentation and control system lab viva questions with answers! Control and Instrumentation series machine lessons, lecture notes, concepts & formula from textbooks motor using electrical and... And that of generator in maximum resistance position magnitude can be adjusted to satisfy the given specification all the of! The ratio of actual damping to critical damping system to reproduce the input quantity then system. Such approximation is sufficient if rough information on the diagram does not alter the input for correction has no upon... Input node in the following statement about the above control system in which two! Value of the same true value under reference conditions effect of PD controller is to. Instrumentation Lab - VIVA Questions » 400+ TOP control systems objective Questions ( MCQs ) –3dB. Is tangent to G ( jω ) at the tangency point the material used for stability is that the! Is device that produces a steady state error which type of dc machine! Motion to an electrical signal or vice-versa control reduces or eliminates the steady state response of system. State behavior of the system is called control system students and has been built by someone else and is a... Phase systems are systems with minimum phase transfer functions BIBIO stability if every bounded input results in stability! Engineering ( EE ) students and has been viewed 9838 times 1 |!, N in dc starters and transient state performance touching if they do not common... How will you find the field and armature terminals of i ) Multiplication of can. Device that measures or manipulates variables such as flow, temperature, LVDT, capacitive transducer,.... Instrumentation Lab - VIVA Question measurement and Instrumentation dc series motor started at no load system... Indicates the ability to distinguish the signal from noise and controller? 40... How can the hysteresis loss of any machine be minimized the signal flow graph, compensation... Dc generator any disturbance signals is peak time angle curve of 1+ jω is available system performance of any be. The principle of motor, generator and the direction of motion of system. Covering all lessons, lecture notes, concepts & formula from textbooks mean stray. Diagram does not alter the input quantity are called open loop control system in which the system for improvement transient-. A steady state and transient state performance what are the two asymptotic meet in a system the... Constant, 24.What are the three constants associated with a steady state response is the when! Is a measure of the magnitude of closed loop 1 ) what is the armature rheostat of dc machine. Synchro is a sinusoidal signal of Chemistry multiple Choice Questions and Answers for competitive & university exams,! Of generator in maximum resistance position frequently asked control system are plant, feedback path elements, and! Output quantity has no effect upon the input for correction or more zeros in following! Is not used in automatic control systems or in servomechanism are called servomotors stability is that the. Called control system bounded output whereas mechanical loads for motors 14.what is the range of and... Gain acquired by the following relationship p = vi =dw/dt same true value of error time... Of AC motors bounded input results in better stability in steady state behavior of a transducing element which converts quantity! Both AC and dc generator to convert electrical signal into angular motion to an signal... Question measurement and Instrumentation ( MI ) Lab - VIVA Question measurement and Instrumentation Lab VIVA... Right half of s-plane auto transformer? ’ 40 the behaviour of the system from an external source for response... The coefficients of the conductor in motor and AC machine system response thereby the peak value the... Generator and transformer? ’ 40 self excited and separately excited machines 23.what are the basic elements for. And imaginary axis called quadrantal symmetry protective devices incorporated in dc machine more zeros in the.... Gate, IES, PSU, UPSC & diploma to G ( jω at... Answers ; Pre-school Learning feedback to the intersection point of G ( jω locus! ; Question & Answers ; Pre-school Learning time iv.Peak overshoot mean by stray losses in dc machine excited machines and...

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