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  1. The transfer function C/R of the block diagram given below is—


    1. G1 +
      G2
      1 + G2H1 + H2

    2. G1G2
      1 + G1H2H1H2

    3. G1G2
      G2H1 + G1G2H2 + 1

    4. G1G2
      1 + G2H1 + G1H2
Correct Option: A

NA



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