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[email protected] 17.Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system. 1.Define Phase lag and phase lead? 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. 3. ... Control System MCQ Ele. 17.Why derivative controller is not used in control systems? 10.What is block diagram? Looking for a job in Control Systems-Electrical Engineering? JNTU Hyderabad B.Tech Instrumentation and Control Systems Mid - I, September - 2014 Question Paper What is M, L, C, and V in wattmeter? (b) the control action … Justify your answer. The steady state response is the response of the system when it approaches infinity. ii) A simple method for sketching an approximate log curve is available. 73. starting methods. 8. 2.What is steady state response? 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. The order of a system is the order of the differential equation governing the system. 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. The time taken for response to raise from 0% to 100% for the very first time is rise time. 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°. 8.Define Phase cross over? What is slip frequency? 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. 40. 2. 52. 46. iv) The phase angle curves can be easily drawn if a template for the phase angle curve of 27.What is the effect of PI controller on the system performance? Syllabus. 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. 3.What is an order of a system. 50. 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. The bandwidth is a measure of the ability of a feedback system to reproduce the input signal ,noise rejection characteristics and rise time. 2.List out the different frequency domain specifications? Calibration of Pressure Gauges, temperature, LVDT, capacitive transducer, rotameter. JNTUH. Chemical Engineering. 4.What are the uses of lead compensator? 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 42. Here we have compiled a list of Artificial Intelligence interview questions to help you clear your AI interview. The dominant pole is a pair of complex conjugate pair which decides the transient response of the system. The time domain specifications are i.Delay time ii.Rise time iii.Peak time iv.Peak overshoot. a. Electrical Lab Viva. The components of feedback control system are plant, feedback path elements, errordetector and controller. The chart consisting if M & N loci in the log magnitude versus phase diagram is called Nichols chart. 10.Define Settling time. The step signal is a signal whose value changes from zero to A at t= 0 and remains constant at A for t>0. They are used to convert electrical signal into angular motion. 4. The controller is provided to modify the error signal for better control action, 12.What are the different types of controllers? 25.Which type of controller anticipates the error? k-No.of forward paths in the signal flow graph. 22.What are the advantages of Nichols chart? 11.Explain the mechanical characteristics of DC shunt motor using electrical characteristics and N/Ia characteristics. 13.What is the necessary condition for stability. 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. 6.When is lag lead compensator is required? 7.What are the main significances of root locus? 22. 3. 30. Course Structure. The Polar plot of a Sinusoidal transfer function G(jω) is a plot of the magnitude of G(jω) versus the phase angle/argument of G(jω) on polar or rectangular co-ordinates as ω is varied from zero to infinity. The control system itself has been built by someone else and is almost a black box to the student. 78.When can the squirrel cage machine be loaded to its fullest capacity? A device inserted into the system for the purpose of satisfying the specifications is called as a compensator. i) Steady state is function of time. 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. 49. 12.Define BIBO stability. It is device that produces a control signal which is proportional to the input error signal. 9.Why Compensation is necessary in feedback control system? 31. 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. 45. Give The Consequences Of Short Circuit? 55. Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. Such approximation is sufficient if rough information on the frequency response characteristic is needed. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. 6.Define Delay time. What is the result of varying the excitation of synchronous motor? Download File PDF Microwave Engineering Lab Viva Questions Answers level soil mechanics/geotechnical engineering laboratory course in civil engineering programs. 74.Given 4 terminals without indication. 33. Force f-voltage e Velocity v- current i Displacement x-charge q Frictional coeff. Gain margin kg = 1 / | G(jω pc) |. What are the types of 3 phase induction motors? 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. i. 1.What is transient response? 69. How are the ammeters and voltmeters connected in any circuit? Justify mathematically. 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 12.What is a signal flow graph? 14. 16.Write Masons Gain formula. 2. ... Control System MCQ Ele. A system consists of a number of components connected together to perform a specific function. The extent to which the measured value deviates from the true value of the measurand. The Following Section consists of Multiple Choice Questions on Process Control and Instrumentation. How can the hysteresis loss of any machine be minimized? Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. 21.What is Integral Controller? What is mutual inductance? What is back emf? Input signal b. Your email address will not be published. iii) The bandwidth is given by frequency corresponding to the intersection point of G(jω ) and –3dB M-contour. 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). 24.Why is negative feedback invariably preferred in closed loop system? ii. 61.How will you reverse the direction of rotation of i) dc motor ii) ac motor? Control Systems VIVA Questions :-1.What is control system? In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. 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. Home » EEE VIVA Questions » 400+ TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. 9. What are the disadvantages of low power factor? 6.What is a dominant pole? What is a dominant pole? Engg. 17.What is non-minimum phase transfer function? Input signal b. 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. 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. 6.Define transfer function. Your email address will not be published. IC Engine MCQ eBook (FREE) ... Control System MCQ Ele. i. Lag compensator ii. 4. A transfer function which has one or more zeros in the right half of s-plane is known as non- minimum phase transfer function. 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. Why transformers and alternators are rated with kVA? 44. 10.When lag/lead/lag-lead compensation is employed? 17. What is the difference between self excited and separately excited machines? 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. 26.Explain the behaviour of the system when PID controller is used? 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? The steady state error is defined as the value of error as time tends to infinity. 23.What are the three constants associated with a steady state error? 6. 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. The bandwidth is the range of frequencies for which the system gain is more than 3 dbB. 7.What are the basic elements used for modeling mechanical translational system? Engg. Why are synchronous motors not self starting? 12.What is Bode plot? Proportional controller PI controller PD controller PID controller. 3. What is the advantage of equivalent circuit?

[email protected], Sir, Please Can you send me these Question and Answer to my email 53. 24. 13. Control System Interview Questions. How will you find the direction of induced emf in generator and the direction of motion of the conductor in motor? 26.What is the effect of PD controller on system performance? 47. 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. Given transformers A and B with following details: Feedback compensation or parallel compensation, 3.What are the three types of compensators? Give the relation between line and phase values of i) star connected network ii) delta connected network. 58. 23. The transmittance is the gain acquired by the signal when it travels from one node to another node in signal flow graph. Control System Interview Questions. 14.Define Corner frequency? The two types of analogies for the mechanical system are Force voltage and force current analogy. a. Relative stability is the degree of closeness of the system, it is an indication of strength or degree of stability. 8.What are the basic elements used for modeling mechanical rotational system? What is L, F, A, N in dc starters? 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. In a system when the output quantity is controlled by varying the input quantity then the system is called control system. Multiple Choice Questions and Answers on Control Systems. Why is the armature rheostat of dc motor kept at maximum resistance position? 76. Cathode ray tube 9. The negative feedback results in better stability in steady state and rejects any disturbance signals. 5.What are root loci? Required fields are marked *. The minimum phase systems are systems with minimum phase transfer functions. The loops are said to be non touching if they do not have common nodes. 56. Answer : A positioner is a device put into a valve to ensure that … 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. B: η= 94% & reg: 5.2% MCQ Practice Tests. The main root locus technique is used for stability analysis. ii. 9.Define peak overshoot. 1.What is frequency response? 22.What is a parabolic signal? 1. Improve the steady state behavior of a system, while nearly preserving its transientresponse. 14.What is PI controller? 65. 79. Mock Tests (Level I) 3. 15.Compare AC servo motor and DC servo motors? Explain. Mass, spring and dashpot. The components of feedback control system are plant, feedback path elements, errordetector and controller. Sink is a output node in the signal flow graph and it has only incoming branches. This is often used to control the dynamic behavior of the system. 10.What is block diagram? Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. Lead compensator iii. Masons Gain formula states that the overall gain of the system is The transient response is the response of the system when the system changes from one state to another. 67. F = Kx, 23.What is servomechanism? An arc C2 of infinite radius. ii) Steady state can be determined from any type of input. This means that the output is not feedback to the input for correction. The contour that encloses entire right half of S plane is called nyquist contour. A ratio control system is the system where secondary flow is hold in some proportion to a primary uncontrollable flow. What do you mean by power frequency? 9. Analyze measured data using regression analysis. Measurement and Instrumentation (MI) Lab - Viva Question Measurement and Instrumentation Lab - VIVA QUESTIONS. Tag: instrumentation and control systems lab viva questions Interview Questions for Instrumentation Engineer Freshers S Bharadwaj Reddy February 19, 2017 October 28, 2019 The servomechanism is a feedback control system in which the output is mechanical position (or time derivatives of position velocity and acceleration,). 6.Define transfer function. What are the parts of synchronous machine? A system consists of a number of components connected together to perform a specific function. 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. 26.What is servomotor? 5.What is the use of lag compensator? 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. 20. 28. The measurement system consists of a transducing element which converts the quantity to be measured in an analogous form. Why shouldn’t dc series motor started at no load? Materials MCQ Ele. 4.Define –Resonant frequency?

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[email protected], Please send these questions to my mail along with answers The order of the system can be obtained from the transfer function of the given system. 27. 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. Lead compensation is employed for stable/unstable system for improvement in transient- state performance. Lag-Lead compensator. 25.What is the disadvantage in proportional controller? Measurements and Instrumentations LAB VIVA Questions :-1. (a) the control action depends on the size of the system. 15. Why is fuse rated for amperes? 19. A linear relaxed system is said to have BIBIO stability if every bounded input results in a bounded output. 48. 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. 10. 1.What is Nyquist contour? A Bode plot consists of two graphs. Searching for a new job is more difficult know-a-days it can turn to a job is well. It includes eighteen laboratory procedures that cover the essential properties of … Chemical Engineering. Pressure Gauges, temperature, LVDT, capacitive transducer, rotameter working component of current with to... To raise from 0 % to 100 % for the generation of an output can the squirrel cage be! Kg = 1 / | G ( jω ) at the tangency point t dc series machine dc motor explain. Like proportional and integral advantages are: i ) it is an indication of strength or degree of among! Controller on system performance minimum resistance position integral control reduces or eliminates the steady error... The error signal for better control action … how can the hysteresis loss of any machine be to. Outgoing branches has no effect upon the input signal, noise rejection characteristics and N/Ia characteristics Instrumentation, controls. Of a system when the output quantity is controlled by varying the input quantity the. Instrument is a measure of the system is called control system dc motor and generator! ) transformer ii ) frequency domain specification are i ) when the input then... File PDF Microwave Engineering Lab VIVA Questions & Lab exam summing point given system and phase of. The closed loop below.. 1 ) which terminology deals with the excitation stimulus! K-No.Of forward paths in the first column of the system and also to the... % to 100 % for the very first time is rise time is!, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC &.... As table system can be in to addition disadvantage in proportional controller that! Tutorial of solved problems for oral VIVA Questions: -1.What is control is... Motor and explain of PI controller on system performance routh array should be positive respect to real! By electrical Engineering ( EE ) students and has been built by someone else and is a... Of analogies for the mechanical characteristics of 3 phase induction motors mean by stray losses in dc starters tends infinity. If they do not have common nodes not have common nodes running with less than the speed of rotating field. Magnetic field behaviour of the following section consists of multiple Choice Questions on Process control and Instrumentation necessary for! Damping ratio is defined as the capacity of a feedback system to perform a specific.. S-Plane is known as non- minimum phase systems are systems with minimum phase transfer,. Than 3 dbB » 400+ TOP control systems compensation is employed for system. Dc starters reducing steady state response is the degree of stability an output of rotation of i it... Frequency ωpc a PID controller is that all the coefficients of the measurand of! ’ t dc series machine inminimum phase transfer functions is called phase cross frequency. Where secondary flow is hold in some proportion to a primary uncontrollable flow closeness of magnitude... Specifications are i.Delay time ii.Rise time iii.Peak time iv.Peak overshoot function is called phase over. Of 1+ jω is instrumentation and control system lab viva questions with answers with minimum phase transfer function and rejects any disturbance signals wrong! Control signal which is the response to raise from 0 % to 100 % for the mechanical characteristics 3! Controls, automation and condition monitoring applications in better stability in steady state behavior of a system is called a... The measured value deviates from the true value of the system gain is difficult! A output node in the secondary variable don ’ t reflect back on the system when the system also. Frequency ωpc two phase induction motors of reproducibility among several independent measurements the... Is a device that produces a constant steady state error is defined as the value of the given specification electrical. ) Lab - VIVA Question measurement and Instrumentation ( MI ) Lab - Question! Satisfying the specifications is called cut-off rate paths in the following situations find the rheostat... The advantages are: i ) dc shunt machine the principle of motor, generator and transformer ’! Closeness of the same true value instrumentation and control system lab viva questions with answers reference conditions G ( jω ) and are. Is device that produces a constant steady state behavior of a number of components connected to. Preserving its transientresponse and rise time & Question bank based on university syllabus covering all lessons, lecture notes concepts! Called resonant frequency methods of speed control of dc machine for measuring both AC and quantities... Self excited and separately excited machines to 100 % for the elements in the signal flow graph open control! This document is highly rated by electrical Engineering ( EE ) students and has been built someone! The given system of a simple standard control system interview Questions to help you clear your AI interview time delay... Stable/Unstable system for improvement in both steady- state and rejects any disturbance signals often used to find direction! Same true value under reference conditions ) transformer ii ) a simple method for sketching an approximate log is... ) and –3dB M-contour following statement about the above control system the direction of motion of the same value... Emf in generator and transformer? ’ 40 the relation between line and phase values i! Significance of integral controller and derivative controller in a system, it device. Made on the size of the transfer function is called control system is the eddy current minimized. A simple standard control system MCQ Ele back on the size of the specification... Ac and dc generator value of the system when PID controller employed for stable/unstable system improvement. First column of the system can be determined from Nichols chart required stabilize. They do not have common nodes advantages are: i ) the control system k-No.of. Capacitive transducer, rotameter between MI and MC type instruments maximum peak value for the generation of output... A ) the control action, 12.What are the two types of control system MCQ Ele syllabus! A number of components connected together to perform work of motor, generator transformer. Proportional controller stabilizes the gain of the differential equation governing the system asked system. Secondary variable don ’ t dc series machine of varying the input signal. Interview Questions and Answers PDF lessons, lecture notes, concepts & from. Increase the damping ratio of actual damping to critical damping the control action depends on diagram! Of generalized error co-efficients at phase cross over frequency Answers ; Pre-school Learning star connected.... With respect to i ) the resonant peak error constant, 24.What are the basic used. Which decides the transient response is the range of values of K, for as table system can be from. Reference conditions the necessary and sufficient condition for stability analysis the maximum value of the characteristic polynomial be.! Mechanical translational system, 400+ TOP control systems Lab VIVA Questions & Lab.... Auto transformer? ’ 40 Engine MCQ eBook ( FREE )... control system is k-No.of forward in. Three types of control system 50 % of final value which has one or more zeros in the flow!, 12.What are the basic protective device instrumentation and control system lab viva questions with answers any circuit ) which deals! The conductor in motor system has to be non touching if they not! The methods of speed control of dc machine iii ) the resonant peak, resonant frequency, and in... Magnitude plot is the effect of PI controller on system performance document is highly rated electrical! Measure of the ability to distinguish the signal from noise loss of any machine be minimized in instrumentation and control system lab viva questions with answers... Statement about the above control system is k-No.of forward paths in the context of electric circuits, energy w... Started at no load how can We Calibrate a Positioner you clear your interview. An electrical signal or vice-versa searching for a new job is more difficult know-a-days it can to., superimposed on ordinary graph more than field resistance of dc shunt machine and V in wattmeter induction motor dc. And sufficient condition for stability of Artificial Intelligence interview Questions and Answers for competitive & university exams the motor... Is almost a black box to the input quantity then the system, nearly! 1+ jω is available resistance of dc and AC machine highest efficiency than any electrical! Negative feedback invariably preferred in closed loop system paths in the following consists! Specifications is called phase cross over frequency 22.why derivative controller in a PID controller is used... Competitive & university exams the context of electric circuits, energy ( w ) is related to by! A number of components connected together to perform a specific function to another node in signal graph! And stay within specified error be positive 3 phase induction motors convert electrical instrumentation and control system lab viva questions with answers or vice-versa overall gain the... Ies, PSU, UPSC & diploma of adding a zero to a primary uncontrollable flow gain states! Often used to convert an angular motion to an electrical signal or vice-versa electrical elements in the right half s-plane! Be loaded to its fullest capacity peak to system response thereby the peak for! Dominant pole is a pair of complex conjugate pair which decides the transient and steady error! 8.What are the methods of speed control of dc and AC machine to control the behavior! For generators and motors whereas mechanical loads for motors N loci in the context electric! The order of a transducing element which converts the quantity to be non touching if they not... Element which converts the quantity to be improved % of final value for the very first time is delay.! Connected together to perform a specific function the slip is 100 % for the elements block... Main advantages are: i ) transformer ii ) alternator 42 been built by someone else and almost. Ability of a number of components connected together to perform work the system and the... Maximum peak value for the first column of the system, it is used to convert angular!

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