Logic Gates & Boolean Operations questions with solutions

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• MCQmediumsemiconductorLogic Gates & Boolean Operations

  The shown two-input logic circuit has input waveforms A,B and output waveform C. Which gate is it?

  

  Options

  • Option A

    OR gate

  • Option B

    NAND gate

  • Option C

    AND gate

  • Option D

    NOR gate

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• MCQmediumsemiconductorLogic Gates & Boolean Operations

  The correct truth table for the given input data of the following logic gate is :

  

  Options

  • Option A

    A B C D | Y

    1 1 0 1 | 1

    0 0 1 1 | 0

    1 0 1 0 | 1

    1 1 1 1 | 0

  • Option B

    A B C D | Y

    1 1 0 1 | 1

    0 0 1 1 | 0

    1 0 1 0 | 0

    1 1 1 1 | 1

  • Option C

    A B C D | Y

    1 1 0 1 | 0

    0 0 1 1 | 0

    1 0 1 0 | 1

    1 1 1 1 | 1

  • Option D

    A B C D | Y

    1 1 0 1 | 0

    0 0 1 1 | 1

    1 0 1 0 | 1

    1 1 1 1 | 1

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• MCQmediumsemiconductorLogic Gates & Boolean Operations

  For the shown transistor/diode circuit, identify the Boolean relation at output Y.

  

  Options

  • Option A

    A + B

  • Option B

    Ā + B̄

  • Option C

    Ā ⋅ B̄

  • Option D

    A·B

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• MCQeasysemiconductorLogic Gates & Boolean Operations

  For a circuit with OR gate joining A, B, followed by AND with C, which input gives output 1?

  Options

  • Option A

    A=0, B=0, C=0

  • Option B

    A=1, B=1, C=0

  • Option C

    A=1, B=0, C=1

  • Option D

    A=0, B=1, C=0

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• Multi-correctmediumsemiconductorLogic Gates & Boolean Operations

  For the logic circuit shown in the source, which of the following input-output rows A,B,C,D,E,F,G are correct?

  

  Select all that apply

  • Option A

    0,0,1,1,0,0,1

  • Option B

    0,1,1,0,0,1,0

  • Option C

    1,0,0,1,1,0,0

  • Option D

    1,1,0,0,0,0,1

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• MCQeasysemiconductorLogic Gates & Boolean Operations

  Choose the correct logic circuit for the truth table shown in the original figure, where the output Y is 0 for inputs 00 and 01, and 1 for inputs 10 and 11.

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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• MCQeasysemiconductorLogic Gates & Boolean Operations

  For input digital waveforms A, B and C and a circuit with an upper AND gate, lower NAND gate, and OR output, what waveform is produced at y?

  Options

  • Option A

    Waveform A: narrow spikes at transitions [Image]

  • Option B

    Waveform B: high in two intervals [Image]

  • Option C

    Waveform C: always high at +5 V

  • Option D

    Waveform D: high except two intervals [Image]

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• MCQmediumsemiconductorLogic Gates & Boolean Operations

  Which of the four shown logic circuits implements the truth table?

  

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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• MCQeasysemiconductorLogic Gates & Boolean Operations

  A logic circuit has truth table A, B→Y: (0,0)→1, (0,1)→0, (1,0)→1, (1,1)→0. What is Y?

  Options

  • Option A

    A·B̅ + A̅

  • Option B

    B̅

  • Option C

    B

  • Option D

    A·B + A̅

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• MCQeasysemiconductorLogic Gates & Boolean Operations

  Which electronic device can function as a complete electronic circuit?

  Options

  • Option A

    Junction diode

  • Option B

    Integrated circuit

  • Option C

    Junction transistor

  • Option D

    Zener diode

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