Control Systems
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be

 un damped
 critical damped
 under damped
 Over damped

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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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