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CONTROL SYSTEMS

Control Systems
Name test signals used in time response analysis?

  Unit ramp.
  Unit step.
  Impulse.
  All of B, C, D.

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Control Systems
A system is stable for (where GM = Gain Margin and PM = Phase Margin):

 GM and PM both +ve.
 GM -ve.
 PM - ve.
 GM and PM both -ve.

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Control Systems
Transfer function of zero order hold response is

 (s) × (1 - est).
 (1 / s) × (1 - e-st).
 (1 / s) × (1 - est).
 (1 / s) × e-st.

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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.
  e3t - e2t.
  e5t.
  e2t + e3t.

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

  s2.
  1 / s.
 1 / s2.
  s.

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