Electronics and Communication Engineering
GATE ECE topic:control-systems PYQs
Build your understanding with focused practice from past exam papers.
Questions 41–50 of 56. Imported answers require independent review unless marked reviewed.
Question 5
Open questionECMCQ1 markNeeds review
The Nyquist stability criterion and the Routh criterion both are powerful analysis tools for determining the stability of feedback controllers. Identify which of the following statements is FALSE:
Your answerChoose one option.
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Open questionECMCQ2 marksNeeds review
The state equation and the output equation of a control system are given below:
The transfer function representation of the system isYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 41
Open questionECNAT2 marksNeeds review
For a unity feedback control system with the forward path transfer function
The peak resonant magnitude
of the closed-loop frequency response is 2. The corresponding value of the gain
(correct to two decimal places) is ________.Log in to check the answer
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Open questionECNAT2 marksNeeds review
The figure below shows the Bode magnitude and phase plots of a stable transfer function
. 
Consider the negative unit feedback configuration with gain
in the feedback path. The closed loop is stable for
. The maximum value of
is ______.Log in to check the answer
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Open questionECNAT1 markNeeds review
The open loop transfer function
where
is an integer, is connected in unity feedback configuration as shown in the figure. 
Given that the steady state error is zero for unit step input and is 6 for unit ramp input, the value of the parameter
is __________.Log in to check the answer
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Open questionECNAT1 markNeeds review
For the system shown in the figure,
________. 
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Open questionECMCQ1 markNeeds review
Consider a stable system with transfer function
where
and
are real valued constants. The slope of the Bode log magnitude curve of
converges to
dB/decade as
. A possible pair of values for
and
isYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 19
Open questionECNAT1 markNeeds review
Consider the state space realization
where
denotes the unit step function. The value of
is ________.Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 20
Open questionECMCQ1 markNeeds review
Which of the following can be the pole-zero configuration of a phase-lag controller (lag compensator)?
Your answerChoose one option.
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Open questionECMCQ1 markNeeds review
Which of the following statements is incorrect?
Your answerChoose one option.
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