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

  2. A.
    G1 G2 G3/1+G1 G2 G3 H1
    B.
    G1 G3+(G2/1+G2 H1)
    C.
    G1 G2 G3+G1 H1
    D.
    G1 G2 G3/1+G2 H1

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  3. The Transfer function C/R of the block diagram given below is

  4. A.
    G1 G2/1+H1 H2
    B.
    G1 G2/G1 G2(H1+ H2)+1
    C.
    G1 G2/G1 G2H1+ H2+1
    D.
    G1 G2/G2 H1-G1H2+1

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  5. A unity feedback system has Open loop Transfer system (s+1), Then Closed loop Transfer function is
  6. A.
    s+1
    B.
    s-1
    C.
    s-1/s+3
    D.
    s+1/s+2

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  7. A unity feedback system has Open loop Transfer system s/(s+1), Then Closed loop Transfer function is
  8. A.
    s/2s+1
    B.
    s/s+1
    C.
    2s/s+2
    D.
    s/s+2

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  9. A unity feedback system has Open loop Transfer system (s2+1), Then Closed loop Transfer function is
  10. A.
    s+1
    B.
    s-1
    C.
    s-1/s+3
    D.
    s2+1/ s2+2

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  11. A system with transfer function G(s) = 1/(s+2)(s-3). Then the poles are located at
  12. A.
    s = 1, s = 2
    B.
    s = 5, s = 4
    C.
    s = 2, s = 3
    D.
    s = -2, s = 3

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  13. A system with transfer function G(s) = 1/(s+6)(s+9)(s+10). Then the poles are located at
  14. A.
    s = 1, s = 2, s = 3
    B.
    s = 5, s = 4, s = 9
    C.
    s = -6, s = -9, s = -10
    D.
    None of these

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  15. A system with transfer function G(s) = (s-5)(s-7). Then the zeros are located at
  16. A.
    s = 1, s=-j+5
    B.
    s = 5, s = 7
    C.
    s = j-5 , s = j-7
    D.
    s = j+5 , s = j+7

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  17. A system with transfer function G(s) = 1/(s2+4s+5). Then the poles are located at
  18. A.
    s = j+1,s=j-1
    B.
    s=3,s=4
    C.
    s=2,s=5
    D.
    s=-2-j,s=-2+j

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  19. The open loop transfer function of a unity feedback system is G(s)=1/s-6. Then the poles of closed loop system are located at
  20. A.
    s = 2
    B.
    s = 3
    C.
    s = 5
    D.
    s = 6

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