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Control Systems

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

 4
 1
 2
 3

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Control Systems
what is the Laplace transform of a function δ(t-2)?

 e-2s
 0
 2
 2s

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Control Systems
The system is initially critical damped. If the gain of the system is doubled, then it will exhibit

 under damped characteristics.
 over damped characteristics.
 undamped characteristics.
 critical damped characteristics.

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Control Systems
In a control system, an integrator is represented by

 1 / s2.
  s.
  1 / s.
  s2.

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Control Systems
The transfer function of a system is G(s) = 100/((s+1)(s+100)). For unit step input to the system the approximate settling time for 2% criterion is

 400 sec
 10 sec
 100 sec
 4 sec

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Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?

 unstable
 critically stable
 stable
 oscillatory

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