Dear candidates you will find MCQ questions of Control System Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: feedback refers to the comparison of the final output to the desired output at respective input so as to get accurate and error free result and in the system improves the transient response of the system.
Explanation: distortion refers to the error in the open loop system and it has many oscillations in the output and is reduced in case of negative feedback.
Explanation: bandwidth is the frequency measured at the gain of 3db and for the good control system the value of the bandwidth must be large but the large value of the bandwidth increses the noise in the system.
Explanation: speed of response refers to the time taken to give the final output and it depends upon the rise and settling time of the transient response and speed of response of closed loop system is more than that of open loop system.
Explanation: in closed loop system the bandwidth of the system is more as compared to the open loop system and this is so required as higher the bandwidth means lower the selectivity and hence higher the noise.
Explanation: low pass filter is mainly as integral controller and it is used as the controller in the system so as to increase the accuracy by reducing or proper eliminating the steady state error of the control system.
Explanation: bandwidth always increases due to negative feedback as the speed of response is directly proportional to the bandwidth.
Explanation: open loop system always follows the input but closed loop system always reduces the error irrespective of the input applied.
Explanation: open loop system always follows the input but closed loop system always reduces the error irrespective of the input applied.
Explanation: t(s)=kg/(1+kgh) if kg>>1: then c(s)=r(s)/h.
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