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Control Systems

Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 1
 3
 2
 0

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Control Systems
Let P = Number of open loop poles and Z = Number of open loop zeros and P > Z, find the number of branches terminating at ∞?

 Any of the above
 Z
 P - Z
 P

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Control Systems
For a lead compensator, the poles lie:

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

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Control Systems
The unit impulse response of second order system is 1/6 * e-0.8t sin(0.6t). THen the natural frequency is

 0.8 rad/s
 2 rad/s
 1 rad/s
 0.6 rad/s

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Control Systems
The transfer function of a system is given as below, if a = 0.1, then the steady state error to unity ramp input will be

 0.49.
 0.16.
 0.35.
 0.25.

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Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 3
 0
 2
 1

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