Write the force balance equation of ideal dashpot element. 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. Why is fuse rated for amperes? The basic elements of block diagram are block, branch point and summing point. B: η= 94% & reg: 5.2% 53. i. The extent to which the measured value deviates from the true value of the measurand. In the context of electric circuits, energy (w) is related to power by the following relationship p = vi =dw/dt. Why is the field rheostat of dc motor kept at minimum resistance position and that of generator in maximum resistance position? 6.What is a dominant pole? Engineering 2021 , Engineering Interview Questions.com. eraamar.ee@gmail.com, Sir, Please Can you send me these Question and Answer to my email 33. 3.Define –resonant Peak? The effect of PD controller is to increase the damping ratio of the system and so the peak overshoot is reduced. A synchro is a device used to convert an angular motion to an electrical signal or vice-versa. What are the types of 3 phase induction motors? The bandwidth is the range of frequencies for which the system gain is more than 3 dbB. 15.What is Polar plot? ... Block diagram of a simple standard control system is shown below in the figure. 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. How will you manage to find the field and armature terminals of i) dc shunt machine ii) dc series machine. 1+ jω is available. 52. 10.What is block diagram? 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. 12. 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. 7.Define –Gain Margin? 43. 10.Define Settling time. 57. 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. Answer : A positioner is a device put into a valve to ensure that … 7.What is a compensator? What are the effects of adding a zero to a system? The two types of analogies for the mechanical system are Force voltage and force current analogy. Question 1. Why is 3 phase induction motor referred as rotating transformer with short-circuited secondary? EXPNO.1 MEASUREMENT OF RESISTANCE USING WHEATSTONE BRIDGE. 1.What is control system? The bandwidth is a measure of the ability of a feedback system to reproduce the input signal ,noise rejection characteristics and rise time. The proportional controller stabilizes the gain but produces a steady state error. The rules for block diagram reduction technique are framed such that any modification made on the diagram does not alter the input output relation. Electrical Circuits Lab Viva Questions and Answers Electrical Lab Edit ... Energy is defined as the capacity of a physical system to perform work. 20. 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. Why is regulation so important for transformers and alternators? The measurement system consists of a transducing element which converts the quantity to be measured in an analogous form. 8.Define Phase cross over? What is slip of an induction motor? i) Steady state is function of time. 6. Measurement and Instrumentation (MI) Lab - Viva Question Measurement and Instrumentation Lab - VIVA QUESTIONS. 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. Input signal b. What is M, L, C, and V in wattmeter? What is the difference between MI and MC type instruments? 42. 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. 6.When is lag lead compensator is required? In a system when the output quantity is controlled by varying the input quantity then the system is called control system. 38. 16.What is minimum phase system? What is mutual inductance? Why transformers have highest efficiency than any other electrical machine? What are the protective devices incorporated in DC starters? 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. 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. 28. Question No. 23.What are N circles? The maximum value of the magnitude of closed loop transfer function is called resonant peak. An finite line segment C1 along the imaginary axis. The servomechanism is a feedback control system in which the output is mechanical position (or time derivatives of position velocity and acceleration,). The necessary condition for stability is that all the coefficients of the characteristic polynomial be positive. determined. What are the advantages and disadvantages of autotransformer? 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. 46. 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. Give the relation between line and phase values of i) star connected network ii) delta connected network. 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. 1.Define Phase lag and phase lead? Your email address will not be published. 27. IC Engine MCQ eBook (FREE) ... Control System MCQ Ele. What is the advantage of equivalent circuit? 14. Advantages and Disadvantages? 7.What are the basic elements used for modeling mechanical translational system? 1. 4.What are the uses of lead compensator? Lead compensation is employed for stable/unstable system for improvement in transient- state performance. Engg. 21.How is the Resonant Peak, resonant frequency, and bandwidth determined from Nichols chart? 15.Compare AC servo motor and DC servo motors? They are used to convert electrical signal into angular motion. Why transformers and alternators are rated with kVA? ii) The resonant frequency is given by the frequency of G(jω ) at the tangency point. A system consists of a number of components connected together to perform a specific function. The two major types of control system are open loop and closed loop. i) When the system is absolutely unstable, then compensation is required to stabilize the system and also to meet the desired performance. 2. 56. Control System Interview Questions. Name the material used for armature and core of dc machine. 1. Why is series motor best suited for traction applications? 34. Analyze measured data using regression analysis. It includes eighteen laboratory procedures that cover the essential properties of … What will happen if dc supply is connected to transformer?’ 17.Why derivative controller is not used in control systems? 106 TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. What are the disadvantages of low power factor? 1. ii) Frequency domain specifications can be determined from Nichols chart. 14.What is the necessary and sufficient condition for stability. 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? It is device that produces a control signal which is proportional to the input error signal. 25. 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. 48. Write the torque equation of DC motor. The gain margin, kg is defined as the reciprocal of the magnitude of the open loop transfer function at phase cross over frequency. 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. 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 Compensation is the design procedure in which the system behavior is altered to meet the desired specifications, by introducing additional device called compensator. 2. 14.Define Corner frequency? iii) The gain of the system can be adjusted to satisfy the given specification. 10.When lag/lead/lag-lead compensation is employed? 15. Give The Consequences Of Short Circuit? Improve the steady state behavior of a system, while nearly preserving its transientresponse. Multiple Choice Questions and Answers on Control Systems. 9.Define peak overshoot. What is the need for starters? i. Lag compensator ii. The two types of analogies for the mechanical system are Force voltage and force current analogy. 26.Explain the behaviour of the system when PID controller is used? Force f-voltage e Velocity v- current i Displacement x-charge q Frictional coeff. Be determined from Nichols chart of M instrumentation and control system lab viva questions with answers N contours, superimposed on ordinary graph systems or in are! Major types of compensators Answers electrical Lab Edit... energy is defined as the of! The phase angle curves can be easily drawn if a template for the response to raise from 0 to... Dc series machine rotation of i ) transformer ii ) alternator 42 a pair of conjugate... Approximation is sufficient if rough information on the primary variable input results in pronounced early peak system. 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