A level Logic Gates Quiz 2

15 Questions

Quiz Description

 Hi everyone!. Welcome to gcequiz.com where in this quiz, we are going to be looking at Logic Gates. It has to do with the fundamental logic gates such as the AND gate, OR gate, NOT gate, NOR gate, NAND gate, and so on. 

A logic gate is an idealized model of computation or physical electronic device that implements a Boolean function, performs a logical operation on one or more binary inputs, producing a single logic output. The implementation of logic gates is usually done using diodes and transistors. The diodes and transistors here act as switches, enabling the device to be switched from one state to another. With amplification, logic gates can be cascaded in the same way that Boolean functions can be composed, permitting the construction of a physical model of all of Boolean Logic.  In modern practice, most logic gates are made from MOSFETs.

You can go and test your knowledge with the quizzes 

Good luck

1:

Which of the following gates is known as coincidence detector?


Correct
  • 1:
    AND gate
  • 2:
    NAND gate
  • 3:
    NOT gate
  • 4:
    OR gate
2:

Which table shows the logical state of a digital circuit output for every possible combination of logical states in the inputs?


Correct
  • 1:
    Routing table
  • 2:
    Truth table
  • 3:
    Function table
  • 4:
    ASCII table
3:

A positive AND gate is also a negative


Correct
  • 1:
    NAND gate
  • 2:
    AND gate
  • 3:
    OR gate
  • 4:
    NOR gate
4:

A demultiplexer is used to


Correct
  • 1:
    Route the data from single input to one of many outputs
  • 2:
    Perform serial to parallel conversion
  • 3:
    Both (a) & (b)
  • 4:
    Select data from several inputs and route it to single output
5:

An OR gate can be imagined as


Correct
  • 1:
    witches connected in series
  • 2:
    Switches connected in parallel
  • 3:
    MOS transistors connected in series
  • 4:
    None of these
6:

Which combination of gates does not allow the implementation of an arbitrary boolean function?


Correct
  • 1:
    OR gates and AND gates only
  • 2:
    NAND gates only
  • 3:
    OR gates and NOT gates only
  • 4:
    OR gates and exclusive OR gate only
7:

Parallel adders are


Correct
  • 1:
    combinational logic circuits
  • 2:
    sequential logic circuits
  • 3:
    both (a) and (b)
  • 4:
    None of these
8:

The digital multiplexer is basically a combination logic circuit to perform the operation


Correct
  • 1:
    AND-AND
  • 2:
    OR-AND
  • 3:
    AND-OR
  • 4:
    OR-OR
9:

The output of NOR gate is


Correct
  • 1:
    High if all of its inputs are high
  • 2:
    Low if all of its inputs are low
  • 3:
    High if all of its inputs are low
  • 4:
    High if only of its inputs is low
10:

A toggle operation cannot be performed using a single


Correct
  • 1:
    NOR gate
  • 2:
    AND gate
  • 3:
    NAND gate
  • 4:
    XOR gate
11:

What is the minimum number of 2 input NAND gates required to implement the function
F = (x'+y') (z+w)


Correct
  • 1:
    4
  • 2:
    5
  • 3:
    6
  • 4:
    3
12:

How many truth tables can be made from one function table?


Correct
  • 1:
    one
  • 2:
    two
  • 3:
    three
  • 4:
    any number
13:

A combinational circuit is one in which the output depends on the


Correct
  • 1:
    nput combination at the time
  • 2:
    input combination and the previous output
  • 3:
    nput combination at that time and the previous input combination
  • 4:
    present output and the previous output
14:

The function of a multiplexer is


Correct
  • 1:
    to decode information
  • 2:
    to select 1 out of N input data sources and to transmit it to single channel
  • 3:
    to transit data on N lines
  • 4:
    to perform serial to parallel conversion
15:

A combinational logic circuit which generates a particular binary word or number is


Correct
  • 1:
    Decoder
  • 2:
    Demultiplexer
  • 3:
    Encoder
  • 4:
    Multiplexer

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A level Logic Gates Quiz 2
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