Control Systems
Lowest critical frequency is due to zero and it may be present at the origin or nearer to the origin, then the type of network is

 LC circuit.
 RLC circuit.
 RC circuit.
 RL Circuit.

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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

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

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