# Frequency Response Analysis · Control Systems · GATE ECE

Start Practice

## Marks 1

GATE ECE 2022
Consider a closed-loop control system with unity negative feedback and KG(s) in the forward path, where the gain K = 2. The complete Nyquist plot of t...
GATE ECE 2016 Set 2
The number and direction of encirclements around the point −1 + j0 in the complex plane by the Nyquist plot of G(s) =$${{1 - s} \over {4 + 2s}}$$ is
GATE ECE 2016 Set 1
A closed-loop control system is stable if the Nyquist plot of the corresponding open-loop transfer function
GATE ECE 2015 Set 3
The phase margin (in degrees) of the system G(s)=$${{10} \over {\left( {s + 10} \right)}}$$ is ___________.
GATE ECE 2015 Set 3
Consider the Bode plot shown in the figure. Assume that all the poles and zeroes are real-valued. The value of fH - fL (in Hz) is ______. ...
GATE ECE 2015 Set 1
The popular plot of the transfer function G(s)=$${{10\left( {s + 1} \right)} \over {\left( {s + 10} \right)}}$$ for $$0 \le \omega < \infty$$ wil...
GATE ECE 2014 Set 4
In a Bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 4th order all-pole system?
GATE ECE 2014 Set 1
Consider the feedback system shown in the figure. The Nyquist plot of G(s) is also shown. Which one of the following conclusions is correct? ...
GATE ECE 2013
The Bode plot of a transfer function G (s) is shown in the figure below. The gain (20 log $$\left| {G(s)} \right|$$ ) is 32 dB and -8dB at 1rad/s ...
GATE ECE 2012
A system with transfer function g(s) = $${{\left( {{s^2} + 9} \right)\left( {s + 2} \right)} \over {\left( {s + 1} \right)\left( {s + 3} \right)\left... GATE ECE 2011 For the transfer function G$$\left( {j\omega } \right) = 5 + j\omega ,$$the corresponding Nyquist plot for positive frequency has the form GATE ECE 2010 For the asymptotic Bode magnitude plot shown below, the system transfer function can be ... GATE ECE 2010 A system with the transfer function$${{Y(s)} \over {X(s)}} = {s \over {s + p}},$$has an output y(t)=$$\cos \left( {2t - {\pi \over 3}} \right),$$... GATE ECE 2007 If the closed-loop transfer function of a control system is given as T(s)=$${{s - 5} \over {(s + 2)(s + 3)}},$$then it is GATE ECE 2006 The open-loop transfer function of a unity-gain feedback control system is given by$$G(s) = {K \over {(s + 1)(s + 2)}},$$the gain margin of the syst... GATE ECE 2006 In the system shown below, x(t)=(sin t). In steady-state, the response y(t) will be ... GATE ECE 2005 Which one of the following polar diagrams corresponds to a lag network? GATE ECE 2003 Figure shows the Nyquist plot of the open-loop transfer function G(s)H(s) of a system. If G(s)H(s) has one right hand pole, the closed loop system is ... GATE ECE 2003 The gain margin for the system with open-loop transfer function G(s)H(s)=$${{2(1 + s)} \over {{s^2}}}$$is GATE ECE 2002 The phase margin of a system with the open-loop transfer function G(s)H(s)=$${{(1 - s)} \over {(1 + s)(2 + s)}}$$is? GATE ECE 2001 The Nyquist plot for the open-loop transfer function G(s) of a unity negative feedback system is shown in figure. if G(s) has no pole in the right hal... GATE ECE 1999 The gain margin of a system having the loop transfer function G(s)H(s) =$${{\sqrt 2 } \over {s(s + 1)}}$$is GATE ECE 1999 The phase margin (in degrees) of a system having the loop transfer function is$$G(s)H(s) = {{2\sqrt 3 } \over {s(s + 1)}}$$GATE ECE 1998 In the Bode-plot of a unity feedback control system, the value of phase of G($$j\omega $$) at the gain cross over frequency is$$ - 125^\circ $$. The ... GATE ECE 1998 The Nyquist plot of a loop transfer function G$$(j\omega )$$H$$(j\omega )$$, of a system encloses the (-1, j0) point. The gain margin of the system i... GATE ECE 1995 Non - minimum phase transfer function is defined as the transfer function GATE ECE 1994 The 3-dB bandwidth of a typical second- order system with the transfer function$${{C\left( s \right)} \over {R(s)}} = {{\omega _n^2} \over {{s^2} + 2...
GATE ECE 1994
The open loop frequency response of a system at two particular frequencies are given by: 1.2 $$\angle - 180^\circ$$ and 1.0 $$\angle - 190^\circ ... ## Marks 2 GATE ECE 2018 The figure below shows the Bode magnitude and phase plots of a stable transfer function$$G(s) = {{{n_0}} \over {{s^3} + {d_2}{s^2} + {d_1}s + {d_0}}}...
GATE ECE 2018
For a unity feedback control system with the forward path transfer function $$G(s) = {K \over {s\left( {s + 2} \right)}}$$ The peak resonant magnitude...
GATE ECE 2017 Set 1
The Nyquist plot of the transfer function $$G(s) = {k \over {\left( {{s^2} + 2s + 2} \right)\left( {s + 2} \right)}}$$ does not encircle the point (-...
GATE ECE 2017 Set 2
EXAM MAP
Medical
NEET