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Control Systems

Control Systems
Resonant peak of a marginally stable system is

 infinite
 0
 any of the above
 finite value

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Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 1
 0
 2
 3

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Control Systems
A linear time invariant system has an impulse response e2t for t > 0 . If initial condition are 0 and input is e3t, the output for t > 0 is

  e5t.
  e2t - e3t.
  e2t + e3t.
  e3t - e2t.

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Control Systems
The transfer function of a system is given as below, if a = 0.1, then the steady state error to unity ramp input will be

 0.49.
 0.25.
 0.35.
 0.16.

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Control Systems
A unity feedback control system has an open loop transfer function G(s) = k/(s(s² + 7s + 12) The gain k for which s = -1 + j1 will lie on the root locus of the system is

 10
 4
 5
 6.5

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Control Systems
For the polynomial , number of roots which lie in the right half of s-plane is

 1
 2
 3
 4

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