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Control Systems

Control Systems
Consider a network function H(s) = 2(s+3)/{(s+2)(s+4)}. What is the steady state response due to step input?

 3/4
 4/3
 1
 1/2

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Control Systems
Error constants of a system are a measure of

 relative stability.
 steady state response as well as transient state response.
 transient state response.
 steady state response.

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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

 both 1 and 3
 sin-1((1 - α)/(1 + α)
 cos-1((1 - α)/(1 + α)
 tan-1((1 - α)/(2√α)

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Control Systems
For a lead compensator, the poles lie:

  on origin.
  on RHS.
  on LHS before zero.
  on LHS.

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

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 -4 and -6.
 0 and 4.
 any of the above.
 0 and -4.

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