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Control Systems

Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

 0.5
 1
 4
 2

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Control Systems
Resonant peak of a marginally stable system is

 finite value
 infinite
 0
 any of the above

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

  1 / s.
 1 / s2.
  s2.
  s.

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Control Systems
The DC gain of a system represented by the transfer function 12 / {( s + 2 )( s + 3 )} is

 5.
 10.
 1.
 2.

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

 (2s+2)/(s+1)²
 (2s+1)/s²
 (2s+2)/s²
 (2s+1)/(s+1)²

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Control Systems
The step response of the system described by the differential equation will be

 e6t.
 (1/6)*(1-e-6t).
 non of above.
 e-3t u(t).

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