semiconductor questions with solutions

Showing 1–10 of 178 questions

• MCQmediumsemiconductorapplication of diode and zener breakdown

  A supply varies from 12 V to 18 V. A 6 V Zener regulator supplies load current from 0 to 20 mA. Zener current must remain between 5 mA and 50 mA. What single series resistance satisfies both extremes?

  Options

  • Option A

    120 Ω

  • Option B

    180 Ω

  • Option C

    240 Ω

  • Option D

    360 Ω

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• MCQmediumsemiconductorP-N jucntion and diode in reverse and forward bias

  In the diode circuit shown, each forward-biased diode has resistance 25 Ω. Which relation between the labelled currents is correct?

  

  Options

  • Option A

    I₁/I₂ = 2

  • Option B

    I₂/I₃ = 1

  • Option C

    I₃/I₄ = 1

  • Option D

    I₁/I₂ = 1

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• MCQmediumsemiconductor

  The V-I characteristic of a p-n junction diode is shown, marking breakdown voltage Vᵦ and knee voltage Vₖ. Which conclusion is correct? Image

  Options

  • Option A

    The forward bias resistance of diode is very high; almost infinity for small values of V and after a certain value it becomes very low.

  • Option B

    The reverse bias resistance of diode is very high in the beginning up to breakdown voltage is not achieved.

  • Option C

    Both forward and reverse bias resistances are same for all voltages.

  • Option D

    Both (1) and (2) are correct.

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• MCQmediumsemiconductorapplication of diode and zener breakdown

  Two ideal diodes have anodes joined at output Y and cathodes connected to positive-logic inputs A and B. A resistor pulls Y to +V. The circuit behaves as:

  Options

  • Option A

    OR

  • Option B

    AND

  • Option C

    NOT

  • Option D

    NAND

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• MCQeasysemiconductorP-N jucntion and diode in reverse and forward bias

  A 5 V source is in series with 430 Ω and a forward-biased silicon diode of 0.7 V drop. Current is:

  Options

  • Option A

    1 mA

  • Option B

    5 mA

  • Option C

    10 mA

  • Option D

    11.6 mA

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• MCQmediumsemiconductorlogic gate

  Refer to the logic circuit shown in the figure. For the two input combinations (A = 1, B = 1) and (A = 0, B = 1), respectively, what are the corresponding output values Y?

  

  Options

  • Option A

    1, 0 respectively

  • Option B

    0, 1 respectively

  • Option C

    0, 0 respectively

  • Option D

    1, 1 respectively

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• MCQmediumsemiconductorlogic gate

  For the logic circuit shown in the original question figure, which option represents the equivalent gate?

  

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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• MCQmediumsemiconductorapplication of diode and zener breakdown

  In the diode-Zener clipper circuit shown in the figure, the input is a sinusoidal voltage varying between +20 V and -20 V, while the observed output is clipped at approximately +5 V and -5 V. Which component arrangement must be connected between terminals X and Y?

  

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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• MCQmediumsemiconductorlogic gate

  Name the logic gate equivalent to the diagram attached

  

  Options

  • Option A

    NOR

  • Option B

    OR

  • Option C

    NAND

  • Option D

    AND

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  JEE Mains6 April 2023Shift 1Morning Shift

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• MCQmediumsemiconductorapplication of diode and zener breakdown

  Two identical Zener diodes, each with Zener voltage $V_Z$ and forward drop $V_F,$ are connected back-to-back in series across AC through a resistor. Conduction begins when |V| approximately exceeds:

  Options

  • Option A

    2$V_Z$

  • Option B

    2$V_F$

  • Option C

    $V_Z+V_F$

  • Option D

    $V_Z-V_F$

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