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Control Systems
What is the open loop DC gain of a unity feedback control system having closed loop transfer function as
4/9
4/13
9/4
13/4
4/9
4/13
9/4
13/4
Answer
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Control Systems
When the polynomial is Routh Hurwitz,
all zeroes lie in the right half of the s-plane.
none of these.
the roots of function have real parts which are to be zero/negative.
the function is not real.
all zeroes lie in the right half of the s-plane.
none of these.
the roots of function have real parts which are to be zero/negative.
the function is not real.
Answer
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Control Systems
The characteristic equation of a feedback control is 2s4 + s3 + 3s2 + 5s + 10 = 0. The no of roots in the right half of the s-plane is
3.
2.
4.
0.
3.
2.
4.
0.
Answer
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Control Systems
If the transfer function of a phase lead compensator is (s+a)/(s+b) and that of a lag compensator is (s+p)/(s+q), then which one of the following sets of conditions must be satisfied?
a < b, p >q
a < b, p < q
a > b, p > q
a > b, p < q
a < b, p >q
a < b, p < q
a > b, p > q
a > b, p < q
Answer
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Control Systems
The open loop transfer function of a unity feedback control system is G(s) = 1/((s(s+0.1s)(s+1)). The value of damping factor for which the resonant peek is equal to 1.4 is
0.386
0.263
0.707
0.953
0.386
0.263
0.707
0.953
Answer
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Control Systems
Weighting function is in terms of -----------------
Laplace transform of the ramp response
Laplace transform of the impulse response
Laplace transform of the parabolic response
Laplace transform of the step response
Laplace transform of the ramp response
Laplace transform of the impulse response
Laplace transform of the parabolic response
Laplace transform of the step response
Answer
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