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Control Systems

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

 1 / s2.
  s.
  1 / s.
  s2.

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

 Unreliable.
 Inaccurate.
None of these
 both 1 and 2.

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Control Systems
A ramp input applied to an unity feedback system results in 5% steady state error. The type number of the system is...........?

 2
 1
 5
 3

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Control Systems
Which of the following controller has sluggish response?

 proportional controller
 derivative controller
 integral controller
 both 2 and 3

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

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Control Systems
What will be the type of the system, if the steady state performance of control system yields a non zero finite value of the velocity error constant?

 type - 3
 type - 0
 type - 1
 type - 2

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