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Control Systems
The characteristic equation of a feedback control system is given by s³ + 5s² + (k + 6)s + k = 0. In the root loci diagram, the asymptotes of the root loci for large 'k' meet at a point in the s-plane whose coordinates are
(1,0)
(-2,0)
(-1,0)
(2,0)
(1,0)
(-2,0)
(-1,0)
(2,0)
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The value of gain margin of the system having G ( s )H ( s ) = 8 / ( s + 2 )3 is
8.
2.
4.
6.
8.
2.
4.
6.
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Control Systems
Settling time for 5% tolerance band is -------------
4T.
5T.
3T.
2T.
4T.
5T.
3T.
2T.
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Control Systems
The open loop transfer function of non unity negative feedback system is , then the number of root locus branches equal to
2.
3.
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1.
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3.
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Answer
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Control Systems
Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?
S is on root locus
None of these
either 1 or 2
S is not on root locus
S is on root locus
None of these
either 1 or 2
S is not on root locus
Answer
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Control Systems
Weighting function is in terms of -----------------
Laplace transform of the parabolic response
Laplace transform of the impulse response
Laplace transform of the ramp response
Laplace transform of the step response
Laplace transform of the parabolic response
Laplace transform of the impulse response
Laplace transform of the ramp response
Laplace transform of the step response
Answer
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