431. In a semiconductor diode, the barrier potential offers opposition to only—
     

1. 1. Majority carriers in both regions

   
   
   

   2. Minority carries in both regions

   
   
   

   3. FRee electrons in the N region

   
   
   

   4. Holes in the P region

   
   
   

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   NA

   Correct Option: A

   NA

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432. Three different circuits for biasing junction transistor amplifiers are given below—
     
     The correct decreasing order of performance of these circuits from the point of the stabilization is—
     

1. 1. I, II, III

   
   
   

   2. III, II, I

   
   
   

   3. II, III, I

   
   
   

   4. I, III, II

   
   
   

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   For more detail refer synopsis.

   Correct Option: C

   For more detail refer synopsis.

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433. Match List I with List II and select the correct answer using the codes given below the lists—

     List - I (Device)	List - II (Biasing mode)
     A.LED	1.Forward bias
     B.Zener	2. Reverse bias
     C.Varactor
     D. SCR

1. 1. 1122
      
      
      

   
   
   

   2. 1212

   
   
   

   3. 1221

   
   
   

   4. 2211

   
   
   

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   NA

   Correct Option: C

   NA

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434. Resistivity is a property of a semiconductor that depends on—
     

1. 1. The shape of the semiconductor

   
   
   

   2. The atomic nature of the semiconductor

   
   
   

   3. The shape and the atomic nature of the semiconductor

   
   
   

   4. The length of the semiconductor

   
   
   

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   NA

   Correct Option: B

   NA

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435. When a normal atom loses an electron, the atom—

1. 1. Becomes a positive ion

   
   
   

   2. Becomes a negative ion

   
   
   

   3. Becomes electrically neutral

   
   
   

   4. Is then free to move about
      

   
   
   

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   NA

   Correct Option: A

   NA

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