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Control Systems

Control Systems
Find the bandwidth of the system, when rise time of the system is give as 1msec?

 350 Hz
 500 Hz
 1 kHz
 750 Hz

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Control Systems
Which of the following statements is/are true?

 both 1 and 2
 Centroid may be a part of root locus
 nether 1 nor 2
 Centroid may not be a part of root locus

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Control Systems
Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?

None of these
 S is on root locus
 S is not on root locus
 either 1 or 2

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

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Control Systems
Lead network is used to

 improve steady state response.
 increase bandwidth.
 both A and C.
 improve transient response.

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Control Systems
The characteristic equation of a control system is given below: The system is

 unstable
 critical stable
 stable
 marginally stable

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