51. Match the 3 curves labelled A, B, C, and D with the characteristics given under List-II and select the correct answer using the code given below the figures:
    Control characteristic of a:
    1. 3-pulse converter feeding pure resistance
    2. Fully controlled converter feeding R-L load with perfect smoothing
    3. Single-phase ac voltage controller feeding pure inductive load 4. 6-pulse half controlled converter.
    
    
    

1. 1. A B C D
      1 2 3 4
      

   
   
   

   2. A B C D
      1 2 4 3
      

   
   
   

   3. A B C D
      2 1 3 4
      

   
   
   

   4. A B C D
      2 1 4 3

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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52. Match the devices on the left hand side with the circuit symbols on right hand side—
    

1. 1. BJT
      
      

   
   
   

   2. MOSFET
      
      

   
   
   

   3. IGBT
      
      

   
   
   

   4. MCT
      

   
   
   

   5. None of these

   
   
   

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   (A-1, B-3, C-4, D-1)

   Correct Option: E

   (A-1, B-3, C-4, D-1)

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53. A storage device where the access time is effectively independent of the location of data is called as:
    

1. 1. Direct access
      

   
   
   

   2. Primary storage
      

   
   
   

   3. Secondary storage
      

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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54. Compact disk is:
    

1. 1. Secondary storage
      

   
   
   

   2. Stores serial and sequential files
      

   
   
   

   3. Carrier
      

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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