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Control Systems

Control Systems
The Laplace transform of a transportation lag of 5 seconds is

 e5s.
 e-5s.
 1/(s+5).
 1/(s-5).

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Control Systems
Which one of the following is the steady state error for a step input applied to a unity feedback system with the open loop transfer function G(s) = 10/(s²+14s+50)?

 0.83
 1
 infinite
 0

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

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

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Control Systems
If the bandwidth of the system is very large, the system response is

 independent of bandwidth
 faster
 slower
None of these

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Control Systems
The value of 'a' in to give phase margin = 45o will be

 0.9.
 1.18.
 0.707.
 1.414.

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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

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

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