Multiple choice

Consider the signal flow graph shown in figure. The gain $ \dfrac{x_5}{x_1} $ is

  1. $ \dfrac{1 - (be+cf+dg)}{abcd} $
  2. $ \dfrac{bedg}{1 - (be+cf+dg)} $
  3. $ \dfrac{bedg}{1 - (be+cf+dg) + bedg} $
  4. $ \dfrac{1 - (be+cf+dg) + bedg}{abcd} $
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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