1
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
Despite the presence of negative feedback, control systems still have problems of instability because the
A
Components used have nonlinearities.
B
Dynamic equations of the subsystems are not known exactly.
C
Mathematical analysis involves approximations.
D
System has large negative phase angle at high frequencies.
2
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
A ramp input applied to an unity feedback system results in 5% steady state error. The type number and zero frequency gain of the system are respectively.
A
1 and 20
B
0 and 20
C
0 and 1/20
D
1 and 1/20
3
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
In the derivation of expression for peak percent overshoot,$$$M_p=exp\left(\frac{-\mathrm{πξ}}{\sqrt{1-\xi^2}}\right)\times100\%$$$ .Which one of the following conditions is NOT required?
A
System is linear and time invariant.
B
The system transfer function has a pair of complex conjugate poles and no zeroes.
C
There is no transportation delay in the system.
D
The system has zero initial conditions.
4
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
A unity feedback system is given as,$$$G\left(s\right)=\frac{K\left(1-s\right)}{s\left(s+3\right)}$$$ indicate the correct root locus diagram.
A
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 1
B
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 2
C
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 3
D
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 4
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