Test: Automatic Control Systems - 4 - Electrical Engineering (EE) MCQ
25 Questions MCQ Test - Test: Automatic Control Systems - 4
Lag compensation increases bandwidth of the system.
Assertion (A): The time response of the system with
will not have any overshoot for unit step input.
Reason (R): A critically damped system does not have any overshoot to a unit step input.
will not have any overshoot for unit step input.| 1 Crore+ students have signed up on EduRev. Have you? Download the App |
For the unity feed back system of the given figure, the closed loop transfer function is
.The polar plot of the given figure is for the term
, magnitude is 0 at ω = ∞ and infinite at ω = 0. Moreover phase angle is -180º.The effect of negative feedback on distortion and bandwidth because
Which of the following rotors are used in two phase ac servomotor?
- Solid iron rotor
- Squirrel cage rotor
- Drag cup rotor
For the system of given figure the closed loop transfer function
or 
.Given figure shows a unity feedback system. The ratio of time constants for open loop and closed loop response are
and time constant = 
For a second order system damping factor is 0.1. If ωd is frequency of damped oscillations and ωn is natural frequency, then
For the block diagram of in the given figure, the transfer function C(s)/R(s) is
The phase angle curve of G(jω) H(jω) can be drawn
The most commonly used devices for differencing and amplification, in control systems, are
For the system in the given figure, the ratio C(s)/R(s) =
In Bode method of stability analysis, the error curve is not symmetric about corner frequency.
can be for
β > 1 
is less than 
.For the feedback system with closed loop transfer function
the settling time for 2% tolerance
and settling time for 2% tolerance is 4T.In a second order system with a unit step input, the speed of response is high if system is
A thermometer requires 1 minute to indicate 98% of its final response to a step input. If it is a first order system the time constant is
Assertion (A): A slight change in pole-zero configuration can cause only minor changes in root locus configuration.
Reason (R): Asymptotes show the behaviour of root loci for |s| >> 1
In a second order system ωn = 10 rad/sec and ζ = 0.1, then ωd =
A system has 12 poles and 2 zeros. Its high frequency asymptote in its magnitude plot has a slope of
The open loop transfer function of a unity feedback system is 
The poles of closed loop system are at
for s2 + 4s + 5 = 0, the roots are - 2 
j1.For the system of the given figure the closed loop poles are located at
.
3.The system in the given figure, x(0) = 0 and x (0) = 0, At t = 0 the unit impulse δ(t) is applied X(s)
.If 
the polar plot, as the frequency is varied from 0 to infinity is
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