semiconductor questions with solutions

Showing 1–10 of 251 questions

• MCQmediumsemiconductorLogic Gates & Boolean Operations

  Find the correct combination of A, B, C and D inputs which can cause the LED to glow.

  

  Options

  • Option A

    0100

  • Option B

    0011

  • Option C

    1000

  • Option D

    1101

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  JEE Mains 202622 January Morning Shift

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• MCQeasysemiconductorDiode Applications & Zener Breakdown

  A 12 V supply feeds an ideal 5 V Zener through 350 Ω. No load is connected. Zener current is:

  Options

  • Option A

    10 mA

  • Option B

    20 mA

  • Option C

    35 mA

  • Option D

    5 mA

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• MCQmediumsemiconductorDiode Applications & Zener Breakdown

  Q39. The maximum rated power of the LED in the circuit shown in the figure is 2 mW, and the input voltage is 5 V. The current through the series resistance Rₛ is 0.5 mA. What is the minimum value of Rₛ required to ensure that the LED is not damaged?

  

  Options

  • Option A

    6 kΩ

  • Option B

    2 kΩ

  • Option C

    4 kΩ

  • Option D

    5 kΩ

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  JEE Mains 2026 6 April Morning Shift

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• MCQmediumsemiconductorP–N Junction Diode & Forward–Reverse Bias

  In the shown diode-resistor circuit, find the current through the 10 V battery.

  

  Options

  • Option A

    1 A

  • Option B

    1.5 A

  • Option C

    2 A

  • Option D

    2.5 A

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  15 April 2023 Morning Shift

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• A/RmediumsemiconductorP–N Junction Diode & Forward–Reverse Bias

  Choose the correct option for the following Assertion (A) and Reason (R).

  Assertion

  A diode under reverse bias carries a very small current that remains nearly independent of reverse voltage until breakdown, beyond which the current increases sharply.

  Reason

  Below the breakdown voltage, the reverse current is mainly due to majority charge carriers, and their flow increases drastically at breakdown.

  Options

  • Option A

    Both A and R are true and R is the correct explanation of A.

  • Option B

    Both A and R are true but R is NOT the correct explanation of A.

  • Option C

    A is true but R is false.

  • Option D

    A is false but R is true.

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• MCQmediumsemiconductorLogic Gates & Boolean Operations

  The logic performed by the circuit shown is equivalent to:

  

  Options

  • Option A

    NAND

  • Option B

    NOR

  • Option C

    AND

  • Option D

    OR

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• MCQmediumsemiconductorDiode Applications & Zener Breakdown

  A Zener regulator is regulating. Load resistance decreases while input remains fixed. Before regulation is lost:

  Options

  • Option A

    Load current ↓, Zener current ↑

  • Option B

    Load current ↑, Zener current ↓

  • Option C

    Both ↓

  • Option D

    Output rises indefinitely

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• MCQeasysemiconductorP–N Junction Diode & Forward–Reverse Bias

  Four diode circuits X, Y, Z and W are shown. Which pairs of diodes are forward biased?

  Options

  • Option A

    X and Z

  • Option B

    Y and W

  • Option C

    X and Y

  • Option D

    X and W

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  AIPMT Mains 2011NEET Previous Year

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• MCQeasysemiconductorDiode Applications & Zener Breakdown

  Choose the correct statements: (I) A Zener diode is connected in reverse bias when used as a voltage regulator. (II) The potential barrier of a p–n junction lies between 0.1 V and 0.3 V.

  Options

  • Option A

    Both are correct

  • Option B

    Both are incorrect

  • Option C

    Only statement I is correct

  • Option D

    Only statement II is correct

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  NEET 2021NEET Previous Year

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• MCQeasysemiconductorP–N Junction Diode & Forward–Reverse 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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