86. At present, the state of the art devices are available as under— MOSFET BJT
    

1. 1. 1200 V, 800 A 500 V, 140 A
      

   
   
   

   2. 500V, 140 A 1200 V, 800 A
      

   
   
   

   3. 800 V, 1000 A 1000 V, 1200 A
      

   
   
   

   4. 200 V, 140 A 1500 V, 800 A

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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87. When a thyristor is negatively biased—
    

1. 1. All the three functions are negatively biased
      Quter functions are positively biased and the inner function are negatively biased
      

   
   
   

   2. Quter functions are negatively biased and the inner function are positively biased
      

   
   
   

   3. The function near the Anode is negatively biased and

   
   
   

   4. the one near the cathode is positively biased

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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88. Secondary breakdown occurs in—
    

1. 1. MOSFET but not in BJT
      

   
   
   

   2. Both BJT and MOSFET
      

   
   
   

   3. BJT but not in MOSFET
      

   
   
   

   4. None of these

   
   
   

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   NA

   Correct Option: C

   NA

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89. A Zener Diode work on the principle of—
    

1. 1. Tunnelling of charge carriers across the junction
      

   
   
   

   2. Thermionic emission
      

   
   
   

   3. Diffusion of charge carrier across the junction
      

   
   
   

   4. hopping of charge carrier across the junction

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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90. Reverse recovery current in a Diode depends opon—
    

1. 1. Forward field current
      

   
   
   

   2. Storage charge
      

   
   
   

   3. Temperature
      

   
   
   

   4. P/V

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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