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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1. Answered
2. Review

Question 1 of 30

Q-1.The Number of Terms in a switching function of four variables are

4

8

16

12

Your Answer:Correct

Your Answer:Incorrect

Question 2 of 30

Q-2.The percentage Quantization error of a ten-bit A/D converter is

0.1%

1%

0.01%

10%

Your Answer:Correct

Your Answer:Incorrect

Question 3 of 30

Q-3.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 4 of 30

Q-4.For a four input resistive divider (0=0V ,1=+10V),the analog output voltage for a digital input of 1101 is

7 (1/3) V

13V

8(2/3)V

11.01 V

Your Answer:Correct

Your Answer:Incorrect

Question 5 of 30

Q-5. The matrix is formed by connecting one diode along with a switch between each row and column

3*4

Diode

2*3

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 6 of 30

Q-6.The logic network as shown in fig below is

Half adder

Half subtractor

Full adder

Full substractor

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.In ___________________, to encode a negative number, first the binary representation of its magnitude is taken, complement each bit and then add 1.

 Signed integer representation

1’s complement representation

2’s complement representation

Radix complement representation

Your Answer:Correct

Your Answer:Incorrect

Question 9 of 30

Q-9.The binary system use powers of……….for positional values.

2

10

8

16

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.An integrator is a

high pass R-C circuits with a large time constant

Low pass R-C circuit with very small time constant

Low pass R-C circuit with a Large time constant

High pass R-C circuit with a very small time constant

Your Answer:Correct

Your Answer:Incorrect

Question 11 of 30

Q-11.A ________________ command signal is applied to the write-control input terminal

Write

Read

Write/Read

Both (A) and(B)

Your Answer:Correct

Your Answer:Incorrect

Question 12 of 30

Q-12.__________is used to create Large program on internet

C++

HTML

C language

Java script

Your Answer:Correct

Your Answer:Incorrect

Question 13 of 30

Q-13.A___________ is a semiconductor memory device used to store information, which is permanent in nature.

Last table

RAM

K- Map

ROM

Your Answer:Correct

Your Answer:Incorrect

Question 14 of 30

Q-14.Maxterms of a function are the terms for which the result is_________

Numerical

Words

Characters

Your Answer:Correct

Your Answer:Incorrect

Question 15 of 30

Q-15.The output of the NOT gate is always the _______________________ of the input.

Same

Negation

Opposite

Both (B) and (C)

Your Answer:Correct

Your Answer:Incorrect

Question 16 of 30

Q-16.The normal data inputs to a flip-flop (D, S and R, J and K, T) are referred to as ________________ inputs

Sequential

Asynchronous

Synchronous

Both (A) and (B)

Your Answer:Correct

Your Answer:Incorrect

Question 17 of 30

Q-17.What are the two ways of representing the 0 with signed magnitude representation?

-0 and -0

 +0 and +0

 -0 and +0

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 18 of 30

Q-18.Following flip flop used as latch

J-K flip flop

Master slave J-K flip flop

T flip flop

D flip flop

Your Answer:Correct

Your Answer:Incorrect

Question 19 of 30

Q-19.Current hogging is a serious drawback in

DTL

DCTL

TTL

ECL

Your Answer:Correct

Your Answer:Incorrect

Question 20 of 30

Q-20.Every valid Boolean expression (equality) remains valid if the operators and identity elements are interchanged.

Distributive Law

Complement

Duality Principle

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 21 of 30

Q-21.Which of the following logic families has the least propagation delay

RTL

DTL

CMOS

I^2L (i square L)

Your Answer:Correct

Your Answer:Incorrect

Question 22 of 30

Q-22.For a sinusoidal input ,Schmitt trigger gives output as

Sinusoidal

Saw tooth wave

Square Wave

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 23 of 30

Q-23.This type of register accepts inputs data simultaneously and output is also coming out parallel

PIPO

SIPO

PISO

SISO

Your Answer:Correct

Your Answer:Incorrect

Question 24 of 30

Q-24.Astable Multivibrator is also known as

One shot Multivibrator

Schmitt Trigger

Free running Multivibrator

Gating circuit

Your Answer:Correct

Your Answer:Incorrect

Question 25 of 30

Q-25.A RTL consists of

Resistor ,transistor and inductors

Resistors,diodes and bipolar junction transistor

Resistors,capacitors and diodes

Resistors and transistors

Your Answer:Correct

Your Answer:Incorrect

Question 26 of 30

Q-26.Which out of the following Binary numbers is equivalent to decimal number 24

1101111

11000

111111

11001

Your Answer:Correct

Your Answer:Incorrect

Question 27 of 30

Q-27.……….Are used for converting one type of number system in to other form.

Encoder 

logic gate

half adder

FA

Your Answer:Correct

Your Answer:Incorrect

Question 28 of 30

Q-28.T Flip flop is used as

Transfer data circuit

Toggle switch

Time delay switch

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 29 of 30

Q-29.The total current can be converted into the corresponding voltage by using an _______________.

Op-Amp

Binary weighted ladder

Delta sigma DAC

Hybrid DAC

Your Answer:Correct

Your Answer:Incorrect

Question 30 of 30

Q-30.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

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