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This mock test of Digital Electronics MCQ Level - 2 for IIT JAM helps you for every IIT JAM entrance exam.
This contains 10 Multiple Choice Questions for IIT JAM Digital Electronics MCQ Level - 2 (mcq) to study with solutions a complete question bank.
The solved questions answers in this Digital Electronics MCQ Level - 2 quiz give you a good mix of easy questions and tough questions. IIT JAM
students definitely take this Digital Electronics MCQ Level - 2 exercise for a better result in the exam. You can find other Digital Electronics MCQ Level - 2 extra questions,
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QUESTION: 1

A logic circuit with an output consists of :

Solution:

can be implemented through the following diagram,

Which requires 2 **AND** gate, 1 **OR** gate and two inverters The correct answer is: two **AND** gates, one **OR** gate and two inverter

QUESTION: 2

In the given digital logic circuit, A and B form the inputs. The output Y is:

Solution:

The correct answer is:

QUESTION: 3

The logic circuit shown in the following figure yields the given truth table.

The gate X in the diagram is.

Solution:

**Correct Answer :- C**

**Explanation :** The truth table of Y = A + B

If X is NAND gate

A + (A + B) = A + B

Hence, X is a NAND gate.

QUESTION: 4

A half-adder is a digital circuit with :

Solution:

The algebraic expression of half-adder are

The correct answer is: two inputs and two outputs

QUESTION: 5

In the given figure, circuit performs the operation of :

Solution:

If either **V _{1}** is positive or

The correct answer is:

QUESTION: 6

The circuit shown in the figure below functions as

Solution:

When **A** is high and **B** is low i.e. **A = 1**, **B = 0** transistor A conducts and Y becomes high, i.e. **Y = 1**. If **A = 0** and **B = 1**; transistor **B** conducts **Y = 1**, if **A = 1** and **B = 1**; both transistors conduct. If **A = B = 0**. None of the transistors conducts hence **Y= 0**. The true table is shown below.

The correct answer is: **OR** gate

QUESTION: 7

The diagram of a logic circuit is given below. The output F is best represented as.

Solution:

From the figure,

The correct answer is:

QUESTION: 8

Which one of the following gives the output Ffor the logic diagram shown below?

Solution:

The correct answer is:

QUESTION: 9

The simplest logic gate circuit corresponding to Boolean expression

is:

Solution:

**Y=P+PQ+P=P(1+Q)+P=P+P=1**

**The output matches with**

**Y=P+P+Q=1+Q=1**

**Hence, logic for Y=P+PQ+P.**

QUESTION: 10

The number of bits that a digital computer can process in parallel at a time is called :

Solution:

Word length.

The correct answer is: word length

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