ECE :: Automatic Control Systems
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Assertion (A): If the Laplace transform is
, the Laplaces transform of impulse response is given by 
Reason (R): The Laplace transform for an impulse function is 1.
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The number of branches of root locus plot is equal to
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The action of bellows is similar to that of
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The given figure shows three Nyquist plots of G(s) H(s) = e-sT/[s(s + 1)] for different values of T. The curves 1, 2, 3 can be
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Consider the following statements:
The gain margin and phase margin of an unstable system may respectively be- positive, positive
- positive, negative
- negative, positive
- negative, negative
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A first order element yields almost exact duplication only for constant or slowly varying phenomenon.
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For a stable system
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is the negative imaginary axis.
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the angle of departure of root locus at s = - 1 + j is