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Champion Test GATE 2019: Control System (App update required to attempt this test)

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Question 1

If the first column of Routh array is 9,-20, 9.5,-29.3,-16.8,-10, how many roots lie on the right half of s-plane?

Question 2

For the unity feedback control system shown in the figure, the open-loop transfer function G(s) is given as
3.20.JPG
The steady state error essdue to a unit step input is

Question 3

The transfer function of a network can be written as. The maximum phase angle occurs at a frequency of _______ rad/sec.

Question 4

for a closed loop system to be stable, the nyquist plot of G(s)H(s) must encircle the point (-1, j0) as many times as the number of (given number of roots on RHS is zero)

Question 5

Feedback control system is given by, and How many poles are in right half of the s-plane?

Question 6

The forward path transfer function of a unity negative feedback system is given by

The value of K which will place both the poles of the closed-loop system at the same location, is ______.

Question 7

The Bode asymptotic magnitude plot of a minimum phase system is shown in the figure.

If the system is connected in a unity negative feedback configuration, the steady state error of the closed loop system, to a unit ramp input, is_________.

Question 8

OLTF of an unity feedback system . for complex roots, the RLD is circle of centre, whose co–ordinates are

Question 9

A unity feedback system has an open loop transfer function. The phase margin in degrees will be ________.

Question 10

Consider the system shown below

The closed-loop system sensitivity with respect to the feedback path transfer function at ω= 0.5 red/sec is_______.

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Jan 7ESE & GATE EE