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Control Systems

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'?

 0
 3
 2
 1

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Control Systems
A second order control system has F(jω) = 100/(100 - ω² + 10√2 jω). Find the resonant peak?

 0.5
 1
 0.707
 1.5

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Control Systems
Type and order of transfer function G (s) = K / {s(s + 2)}

 0, 2.
 1, 2.
 1, 1.
 2, 1.

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Control Systems
None of the poles of a linear control system lie in the right half of s plane. For a bounded input, the output of this system

  always bounded.
  could be unbounded.
  tends to zero.
  none of these.

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Control Systems
A proportional plus derivative controller

 both 1 and 2
 has high sensitivity
 increases the stability of the system
 improves the steady state accuracy

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Control Systems
Force balancing equation for elastic element (K) is (where, x = displacement)

 K dx/dt
 K d2x/dt2
 K *x
None of these

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