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Gate 2019: Control System Quiz 5
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Question 1
In the feedback system shown below 
The step response of the closed-loop system should have minimum settling time and have no overshoot.
The required value of gain k to achieve this is
The step response of the closed-loop system should have minimum settling time and have no overshoot.
The required value of gain k to achieve this is
Question 2
The natural frequency of an undamped second-order system is 40 rad/s. If the system is damped with a damping ratio 0.3, the damped natural frequency in rad/s is ________.
Question 3
The transfer function of a unity feedback (type-1) second order system has a pole at (s = –2). The nature of gain K is such that the damping ratio is 0.4. The steady state error for r(t) = 4t is _____.
Question 4
A feedback system employing output rate damping is shown below
In the absence of derivative feedback, the rise time for the system response is _______ sec.
In the absence of derivative feedback, the rise time for the system response is _______ sec.
Question 5
The open-loop transfer function of a dc motor is given as 
. When connected in feedback as shown below, the approximate value of Ka that will reduced the time constant of the closed loop system by one hundred times as compared to that of the open-loop system is
. When connected in feedback as shown below, the approximate value of Ka that will reduced the time constant of the closed loop system by one hundred times as compared to that of the open-loop system is Question 6
The response of the system 
to the unit step input 
the value of 
at t=0+ is
to the unit step input the value of at t=0+ is- 667 attempts
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Sep 22ESE & GATE EC
