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This mock test of Logic Gates MSQ for Physics helps you for every Physics entrance exam.
This contains 10 Multiple Choice Questions for Physics Logic Gates MSQ (mcq) to study with solutions a complete question bank.
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QUESTION: 1

The output of which of the following logic gate is high when one or both of the input is low :

Solution:

In digital electronics, a **NAND gate** (NOT-AND) is a logic **gate** which produces an output which is false only if all its inputs are true; thus its output is complement to that of an AND **gate**. A LOW (0) output results only if all the inputs to the **gate** are HIGH (1); if any input is LOW (0), a HIGH (1) output results.

QUESTION: 2

Which of the following gate can be build using a single transistor?

Solution:

** Answer :- d**

**Solution :- A transistor can be used as a switch. That is, when base is low collector is high (input zero, output one) and base is high collector is low (input 1, output 0).**

*Multiple options can be correct

QUESTION: 3

If the input to a NOT gate is A and the output is X, then :

Solution:

The correct answer is: X =

*Multiple options can be correct

QUESTION: 4

How many of the inputs of a 4 input AND gate must be HIGH in order for the output of the logic gate to go HIGH?

Solution:

The correct answer is: all 4

*Multiple options can be correct

QUESTION: 5

The output of a logic gate is high when all its inputs are at logic 0. The gate can be :

Solution:

The correct answers are: NOR, XNOR, NAND

*Multiple options can be correct

QUESTION: 6

When simplified with boolean algebra, the expression (x + y)(x + z) simplies to :

Solution:

The correct answer is: x + yz

*Multiple options can be correct

QUESTION: 7

Which gates are required to build an exclusive OR (XOR) gate?

Solution:

The correct answers are: OR, AND, NOT

*Multiple options can be correct

QUESTION: 8

The boolean expression of an OR gate is _______

Solution:

An OR gate gives the result as 1 if any one of the inputs is one.

Its expression is A + B.

An OR gate gives a 0 only if both the inputs are 0.

*Multiple options can be correct

QUESTION: 9

The boolean expression is equivalent to :

Solution:

The correct answers are:

*Multiple options can be correct

QUESTION: 10

Choose the correct options :

Solution:

The correct answers are: The boolean expression of an **AND** gate followed by an inverter is same as the boolean expression for a **NAND** gate., The boolean expression for an **OR** gate followed by a **NOT** gate is same as that for a NOR gate, No two basic logic gates have the same boolean expression

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