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Control Systems

Control Systems
Name test signals used in time response analysis?

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

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Control Systems
The transfer function of a phase lead compensator is given by: G(s) = (1 + 3Ts)/(1 + Ts) where T>0. What is the maximum phase shift provided by such a compensator?

 60°
 45°
 90°
 30°

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Control Systems
Number of sign changes in the entries in 1st column of Routh array denotes the no. of

 open loop poles in RHP.
 roots of characteristic polynomial in RHP.
 open loop zeroes in RHP.
 zeroes of system in RHP.

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Control Systems
When the polynomial is Routh Hurwitz,

 the roots of function have real parts which are to be zero/negative.
 all zeroes lie in the right half of the s-plane.
 the function is not real.
 none of these.

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Control Systems
The transfer function of the control system depends on

 the system parameters alone.
 nature of the output.
 initial conditions of input and output.
 nature of the input.

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Control Systems
Which of the following controller is also known as anticipatory controller?

 integral controller
 proportional controller
 both 1 and 3
 derivative controller

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