Digital Electronics Online Test 1 – Randomized MCQs

With each visit of this Digital Electronics online Quiz / Practice Test, the list of MCQs / Objective Questions presented will be different, offering you a diverse set of practice opportunities. This variability encourages you to practice extensively, refining the accuracy of your answers and your overall grasp of the content. By utilizing this resource, you can hone your skills and become more adept at managing time constraints during actual exams.

Test Instructions
Question type	Randomized MCQs.Changes every time you visit the test
Total Number of Questions	30
Time Limit	20 Minutes
Points	1 Point for each Question

Remaining Time: 0 MINUTES

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Question 1 of 30

Q-1.the output of a two input AND gate is high

only if both the inputs are high

only if both the inputs are low

only if one inputs is high and other is low

if atleast one of the input is low

Your Answer:Correct

Your Answer:Incorrect

Question 2 of 30

Q-2.Which of the following condition is true for determining overflow condition in 2’s complement?

When adding two positive numbers gives a negative result or when two negatives give a positive result.

If sign bit (MSB) of result and sign bit of two operands are of different signs.

The ‘1’ in the MSB position indicates a negative number after adding two positive numbers.

All of the above

Your Answer:Correct

Your Answer:Incorrect

Question 3 of 30

Q-3.Binary ladder network is better than resistive divider for D/A conversion ,because

It requires lesser number of resistors

it requires resistor having two values only

It is cheaper

It gives better accuracy

Your Answer:Correct

Your Answer:Incorrect

Question 4 of 30

Q-4.How many inputs and outputs does a full subtrctor circuit have?

Two inputs and one outputs

Two inputs,one outputs

Two inputs ,three outputs

Three inputs,two outputs

Your Answer:Correct

Your Answer:Incorrect

Question 5 of 30

Q-5.Symbol: F = A.B, where ‘.’ implies ________________ operation.

AND

XOR

NOR

Your Answer:Correct

Your Answer:Incorrect

Question 6 of 30

Q-6.A PLA consists of two-level____________ circuits on a single chip

AND-OR

NOR-NAND

XOR-AND

OR-NAND

Your Answer:Correct

Your Answer:Incorrect

Question 7 of 30

Q-7.In this type of register, data can be shifted in either right or left direction by using control signal.

PIPO

SISO

Bi-directional Shift Register

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 8 of 30

Q-8.The First Generation of computer appeared during the period__________

1945 to 1954

1964 to 1974

1934 to 1944

1937 to 1949

Your Answer:Correct

Your Answer:Incorrect

Question 9 of 30

Q-9.For a function F, the complement of this function F′ is obtained by interchanging 1 with

100

110

One-Fourth

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.Pentium-I, Pentium-II, Pentium-III and Pentium-IV are recently introduced microprocessor by__________

Motorala

Intel

Stephen Mors

None

Your Answer:Correct

Your Answer:Incorrect

Question 11 of 30

Q-11.BCD-to-Excess-3 Code Conversion is a example of a ______________.

4-bit Parallel Adder

Sum-of-Products

2- bit Parallel Adder

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 12 of 30

Q-12.The power consumption of the dynamic RAM is

More than that of the static RAM

Equal to that the static RAM

Less than that of the static RAM

Zero

Your Answer:Correct

Your Answer:Incorrect

Question 13 of 30

Q-13.The OR gate output is 0 only when both the inputs are _________________

Minus

Your Answer:Correct

Your Answer:Incorrect

Question 14 of 30

Q-14.ASCII code is required for representing more than ________ characters

Your Answer:Correct

Your Answer:Incorrect

Question 15 of 30

Q-15.A PLA is a

SSI device

MSI Device

LSI Device

VLSI device

Your Answer:Correct

Your Answer:Incorrect

Question 16 of 30

Q-16.For every x, y in B, n x + y n x. y

Closure

Hand-held

Commutative Law

Identities

Your Answer:Correct

Your Answer:Incorrect

Question 17 of 30

Q-17.Using 2’s Complement, subtraction, of (1010)2 from (0011)2 is

(0111)2

(1001)2

–(0111)2

–(1001)2

Your Answer:Correct

Your Answer:Incorrect

Question 18 of 30

Q-18.In which type of conversion, binary numbers can be converted into equivalent octal numbers by making groups of three bits starting from the LSB, moving towards the MSB of the number and then replacing each group of three bits by its octal representation

Conversion of decimal fraction to any base

Conversion from decimal base to any base

Direct conversion from binary to hexadecimal

Direct conversion from binary to octal

Your Answer:Correct

Your Answer:Incorrect

Question 19 of 30

Q-19.It compares two n-bit values to determine whether one of them is greater or if they are equal

Calculator

Multiplexer

Comparator

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 20 of 30

Q-20.Using the transformation method discussed, you can realize any POS realization of OR-AND with only

XOR

NAND

AND

NOR

Your Answer:Correct

Your Answer:Incorrect

Question 21 of 30

Q-21.In the miller voltage sweep circuit,the amplifier used should have

gain of -∞

gain of +∞

gain of +1

gain of -1

Your Answer:Correct

Your Answer:Incorrect

Question 22 of 30

Q-22. ___________ and Clear should not be 0 at the same time; otherwise, both the outputs will be 1, which is known as invalid state.

Preset

Post set

Fixed

Both (A) and (B)

Your Answer:Correct

Your Answer:Incorrect

Question 23 of 30

Q-23.In, subtraction of positive numbers using radix complement representation (M – N), If number of digits are not same in M and N how can you make them equal?

By appending 1 at the end

By appending 1 at the beginning

By appending 0 at the beginning

By appending 0 at the end

Your Answer:Correct

Your Answer:Incorrect

Question 24 of 30

Q-24.In case of XOR/XNOR simplification, you have to look for the following ____________________

Diagonal Adjacencies

Offset Adjacencies

Straight Adjacencies

Both (A) and (B)

Your Answer:Correct

Your Answer:Incorrect

Question 25 of 30

Q-25._____________ expressions can be implemented using either (1) 2-level AND-OR logic circuits or (2) 2-level NAND logic circuits

POS

Literals

(SOP)

All of the above

Your Answer:Correct

Your Answer:Incorrect

Question 26 of 30

Q-26.The address / data bus in 8085 is __________

Multiplexed

demultiplexed

decoded

loaded

Your Answer:Correct

Your Answer:Incorrect

Question 27 of 30

Q-27.The MSB of _____________ is same as the MSB of the corresponding Gray code.

Alphanumeric code

Excess-3 code

Binary code

Gray code

Your Answer:Correct

Your Answer:Incorrect

Question 28 of 30

Q-28.An AND matrix is used to form _____________ terms.

Minimum

Maximum

Product

Sum

Your Answer:Correct

Your Answer:Incorrect

Question 29 of 30

Q-29.12+12=………..

none of these

Your Answer:Correct

Your Answer:Incorrect

Question 30 of 30

Q-30.In which conversion the product of number 16 raised by the location and then add all the products to get the final decimal value?

Octal to decimal

Binary to Decimal

Hexadecimal to decimal

None of the above

Your Answer:Correct

Your Answer:Incorrect

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Digital Electronics Online Test 1 – Randomized MCQs

Digital Electronics Online Test 1 – Randomized MCQs

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