76. Match List-I with List-II and select the correct answer using the codes given below the lists:
    
    
    
    

1. 1. A B C D
      1 3 4 5
      

   
   
   

   2. A B C D
      2 3 1 4
      

   
   
   

   3. A B C D
      5 4 6 8
      

   
   
   

   4. A B C D
      2 1 3 7

   
   
   

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1. View Hint View Answer Discuss in Forum

   For more detail refer synopsis.

   Correct Option: D

   For more detail refer synopsis.

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

1. 1. G1 +	G2
      	1 + G2H1 + H2

      
      

   
   
   

   2. G1G2

      1 + G1H2H1H2

      
      

   
   
   

   3. G1G2

      G2H1 + G1G2H2 + 1

      
      

   
   
   

   4. G1G2

      1 + G2H1 + G1H2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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

1. 1. G1G2G3

      1 + G1G2G3H1

      
      

   
   
   

   2. G1G3 +	G2
      	1 + G2H1

      
      

   
   
   

   3. G1G2	+ G3
      1 + G1G2H1

      
      

   
   
   

   4. G1G2G3

      1 + G2H1

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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

1. 1. G1G2

      1 + H1H2

      
      

   
   
   

   2. G1G2

      G1G2(H1 + H2) + 1

      
      

   
   
   

   3. G1G2

      1 + G1G2H1 + H2

      
      

   
   
   

   4. G1G2

      1 + G2H1 – G1H2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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80. A unity feedback system has OLTF, G (s) = 9/s(s + 3)
    

1. 1. Natural frequency = 9 rad/sec.
      

   
   
   

   2. Natural frequency = 3 rad/sec.
      

   
   
   

   3. Damping ratio = 1/2
      

   
   
   

   4. Damping ratio = 1/6

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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