Control systems engineering questions and answers pdf
+ TOP CONTROL SYSTEMS Objective Questions and Answers PdfLooking for a job in Control Systems-Electrical Engineering? To be precise about Control Systems-Electrical Engineering is an engineering discipline that applies automatic control theory to design systems with desired behaviours in control environments. Question 1. Question 2. Answer : Basic components of the feedback control system are process system open loop system , feedback path element, error detector, and controller. Question 3. Define Transfer Function?
Best 100+ Questions of "Control System" for LMRC/RAILWAY/ISRO/UPPCL/DMRC/Other state exam
Control System Interview Questions
Electronic Circuits Interview Questions Question. Electronic Circuits Interview Questions. What is steady state error. What Is Gain Margin.Peak overshoot is defined as the ratio of maximum peak value measured from the maximum value to final value? Measurements and Instrumentation Objective Type Questions. The first order control system, which is well designed. Answer advantages are: a.
A block diagram of a system is a pictorial representation of the functions quesions by each component of the system and shows the flow of signals. Your email address will not be published. The bandwidth is the range of frequencies for which the system gain Is more than 3 dB. Please mail your requirement at hr javatpoint.
Answer : Time response of the control system is defined as the output of the closed loop system as a function of time. What is an order engineeering a system. A Bode plot consists of two graphs. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is a not necessarily stable b stable c unstable d always engieering e any of the above Ans: a.
A negative phase angle is called phase lag! Closed loop control system. Depending systesm the condition of hazards the type of cable is decided. Question 9.
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The ramp signal resembles a constant velocity. Positional error constant ii. A finite line segment C1 along the imaginary axis. It is based on asymptotic approximation.
A conditionally stable system exhibits poor stability at a low frequencies b reduced values of open loop gain c increased values of open loop gain d none of the above Ans: b! Which of the following is the output of a thermocouple. More From Tahuu Ahmed. The frequency at which the two asymptotic meet in a magnitude plot is called corner frequency.Zero initial condition for a system means a input reference signal is zero b zero stored energy c ne initial movement of moving parts system system is at rest and no energy is stored in any of its components Ans: d The transfer function technique is considered as inadequate under which of the following conditions. Answer : Resonant peak is defined as the maximum value of the answeds loop transfer function. Miguel Angel Guzman Reyes.
Answer : Negative Feedback in a Control System has following Characteristics Reduction in the gain at the expense of better stability of the system Rejection of disturbance signals in the system Low Sensitivity to parameter variations Accuracy in tracking the steady state value Question 2. The essential characteristics of the signal flow graph are: It represents a network in which nodes are used for the representation of system variable which cntrol connected by direct branches. A node is a point representing a variable or signal. Phase Margin.
What is transient response? The transient response is the response of the system when the system changes from one state to another. What is steady state response? The steady state response is the response of the system when it approaches infinity. What is an order of a system? The order of a system is the order of the differential equation governing the system.
Test signals helps in predicting the performance of the system as the input signals which we give are known hence we can see the output response of the system for a given input and can understand the behavior of the control system. Answer : The slope of the log-magnitude curve near the cut-off frequency is called the cut-off rate. Username Password. Hence derivative controller is not used in control system. The basic elements of block diagram are block.
In electrical-pneumatic system analogy the current is considered analogous to a velocity b pressure c air flow d air flow rate. In liquid level and electrical system analogy, voltage is considered analogous to a head b liquid flow c liquid flow rate d none of the above. The viscous friction co-efficient, in force-voltage analogy, is analogous to a charge b resistance c reciprocal of inductance d reciprocal of conductance e none of the above. In force-voltage analogy, velocity is analogous to a current b charge c inductance d capacitance. In thermal-electrical analogy charge is considered analogous to a heat flow b reciprocal of heat flow c reciprocal of temperature d temperature e none of the above. Mass, in force-voltage analogy, is analogous to a charge b current c inductance d resistance.
The control system in which the output quantity has no effect upon the input quantity is called open loop control system. Zero initial condition for ahd system means a input reference signal is zero b zero stored energy c ne initial movement of moving parts d system is at rest and no energy is stored in any of its components Ans: d Force-voltage e b. Abdulrazzaq F.
Define phase lag and phase lead! Then the system may be stable or unstable under some limited constraints such a system is called limitedly stable system. In thermal-electrical analogy charge is considered analogous to a heat flow b reciprocal of heat flow c reciprocal of temperature d temperature e none of the above. Answer : The phase margin is the amount of additional phase lag at the gain cross over frequency required to bring the system to the verge of instability?A differentiator is usually not a part of a control system because it a reduces qudstions b reduces the gain margin c increases input noise d increases error Ans: c. Which of the following statements is correct for any closed loop system. What is the disadvantage in proportional controller. PI controller iii.
Define peak time. Report this Document. Name the test signals used in control system. All Courses.