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  • Question
  • If transfer function of a system is H(z) = 6 + z-1 + z-2 then system is


  • Options
  • A. minimun phase
  • B. maximum phase
  • C. mixed phase
  • D. none

  • Correct Answer
  • minimun phase 

    Explanation
    H(z) = 6 + z-1 - z-2, solve it by considering H(z) = 0 z = 1/3, -1/2 in H(z) only numerator.

    Hence z = 1/3, - 1/2 will be zero, and if zero lies inside the unit circle, system will be of minimum phase.


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