Control Systems
The characteristic equation of a feedback control system is given by s³ + 5s² + (k + 6)s + k = 0. In the root loci diagram, the asymptotes of the root loci for large 'k' meet at a point in the s-plane whose coordinates are

 (-2,0)
 (1,0)
 (-1,0)
 (2,0)

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Control Systems
When deriving the transfer function of linear element

 initial conditions are taken into account but the element is assumed to be not loaded.
 both initial conditions and loading are taken into account.
 initial conditions are assumed to be zero and the element is assumed to be not loaded.
 initial conditions are assumed to be zero but loading is taken into account.

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Control Systems
An open loop control system, represented by the transfer function G ( s ) = ( s - 1 ) / ( s + 2 )( s + 3 ), is

  stable and of the minimum phase type.
  stable and of the non-minimum phase type.
  unstable and of the minimum phase type.
  unstable and of the non minimum phase type .

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