13 Aug 2018

What is a Signal - Types of Signals and Examples of Signals

Here we will discuss- what is a signal, definitions of signal, interesting examples of signals in our daily life and different types of signals.
Do you know, whether you are walking, singing, speaking or dancing... You are producing signals !!! Our whole universe is mathematical...


Definition of Signal


1. Any physical quantity that varies with time and space is a Signal.

2. A Signal may be defined as a function of one or more independent variables like time, distance, position or temperature etc. that has some information about the phenomena (event) that produced it.

A signal can be a Motion signal, Sound signal, Image signal or Video signal etc. Now let's discuss each type of the signals-


Watch the Complete Video Here

Types of Signals


1. Motion signal

Any object that moves has a signal associated with it. 
To make it clear let's take an example-
The mathematical equation given below tells the position of a particle at any time instant-

x = 3t + 5

Here 'x' is the position and 't' is time

With the help of this equation you can easily find out the position of this particle at any time instant.

e.g.  x = 5      at t = 0
        x = 11    at t = 2 
and so on...

One important example of the motion signal is RADAR which displays the motion of any aircraft as an electromagnetic signal.


Sound signal

When any medium (ex. air) vibrates it produces sound.
Sound signal Associates a pressure value to every value of time and space coordinates.


Image signal

Do you know that image is also a signal !!! 
An image or a picture has a color or brightness signal; a function of two dimensional location. Any object's appearance is represented as a reflected or emitted electromagnetic wave which is a type of electronic signal.
So any image has two components-
Color and brightness


Video signal

A video signal is just a sequence of images. A Point in a video can be identified as its two dimensional position and time of its occurrence. This makes the video a three-dimensional entity having two dimensional position and time as the third dimension.

Read More-

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FREQUENCY SPECTRUM OF AMPLITUDE MODULATION (WAVEFORMS AND EQUATIONS DERIVATION)

AMPLITUDE MODULATION (TIME DOMAIN EQUATIONS AND WAVEFORMS)

ADVANTAGES AND DISADVANTAGES OF DIGITAL COMMUNICATION SYSTEM

ADVANTAGES OF OPTICAL FIBER COMMUNICATION

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PULSE MODULATION TECHNIQUES (PAM, PWM, PPM, PCM)

OPTICAL FIBER: STRUCTURE AND WORKING PRINCIPLE

PULSE AMPLITUDE MODULATION (PAM)

COMPARISON OF PAM, PWM, PPM MODULATION TECHNIQUES

PULSE WIDTH MODULATION (PWM)

CONTINUOUS TIME AND DISCRETE TIME SIGNALS (C.T. AND D.T. SIGNALS)

NEED AND BENEFITS OF MODULATION

PULSE POSITION MODULATION (PPM)

OPTICAL FIBERS IN COMMUNICATION: COVERS ALL IMPORTANT POINTS

OPTICAL FIBER SOURCES (DESIRABLE PROPERTIES)

AMPLITUDE MODULATION Vs FREQUENCY MODULATION (ADVANTAGES AND DISADVANTAGES)

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SAMPLING THEOREM AND RECONSTRUCTION (SAMPLING AND QUANTIZATION)

SUPERPOSITION THEOREM (BASICS, SOLVED PROBLEMS, APPLICATIONS AND LIMITATIONS)

Digital Modulation Techniques (ASK, FSK, PSK, BPSK)/ Amplitude, Frequency and Phase Shift Keying

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Quadrature Amplitude Modulation (QAM)/ QAM Transmitter and QAM Receiver Block Diagram

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Block Diagram of CRO (Cathode Ray Oscilloscope), Components of CRO and CRT with Structure and Working

Slope Overload Distortion and Granular (Idle Noise), Quantization Noise in Delta Modulation

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Pulse Code Modulation (PCM) Vs Differential Pulse Code Modulation (DPCM)



TOP 10 TOUGHEST EXAMS in the World

These are the 10 most difficult exams in the world. If you have Cracked any one of these exams then you are among the most intelligent persons in the world !!! These 10 hardest exams in the world are discussed here-


10. CCIE- Cisco Certified  Internetworking Expert

This exam is conducted for the recruitment of internet experts by the Cisco Networks within their organisation. This test is divided into 6 parts within two phases. To appear for the 2nd phase it is required to clear the first phase of the exam. This exam lasts for 8 hours and the clearing rate is only 1%.


9. GATE- Gratitude Aptitude Test in Engineering

GATE exam acts as an entrance test for Indian Engineering students. After qualifying this exam it is possible to go for post graduation courses or join any PSU. GATE is conducted by IIT or IISC.


8. Gaokao

This famous exam of China is mandatory for every high school student for pursuing higher education. This exam is held annually in the China.


7. IIT JEE- Indian Institute of Technology Joint Entrance Examination

By clearing this exam after 10 + 2, indian students can get admission into the top engineering institutes in India including iITs. This exam consists of two objective type papers of 3 hours each. Only 10k candidates are selected out of 500 k candidates appearing for the exam.


6. UPSC- Union Public Service Commission

This exam is conducted in India to recruit top government officials of the country. This is the most difficult exam in India. Only 1000 candidates are selected out of 300k candidates.


5. Mensa

Dementia society is a global society that consists of people having highest intelligence quotient (IQ). Every country has it's own mensa society. Mensa is the oldest and largest IQ Organisation in the world and is considered the most difficult IQ test in the world. There is no age restriction for this iQ test. The youngest member of mensa society is only 2 years old.


4. GRE- Graduate Record Examinations

GRE score is required by almost every university in the United States for higher education. Many other universities of another countries also accept the GRE score. This exam is available in online and offline moods and is considered one of the most difficult exam in the world.


3. CFA

This exam has been ranked the most difficult exam in the world by the Wall Street Journal. Actually it is not an examination degree but more of a professional stature. After clearing this program the candidate is awarded the 'CFA charter'.


2. All Souls Prize Fellowship Exam

All souls college of Oxford University conducts this fellowship exam. It is easy to understand the difficulty level of this exam by the fact that, every year only two candidates are selected for this fellowship. This is ranked 2 in the most difficult exams in the world.


1. Master Sommelier Diploma Exam

This exam has three parts - theory, service and blind tasting. To crack this exam students have to identify the taste, the year and region of the wine as it is an exam of expert winemakers. Interesting!!! It is considered the most difficult exam in the world.


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Why all Planets and Stars are Round in Shape | Why all Planets are Sphere in Shape

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Facts about North America - North America Map and Globe - Continents of the World

FACTS about EUROPE - MAP of European Countries - European Continent Facts

Islands of North America - Interesting Facts about North American Islands that You Never Knew !!!

Top 10 Largest Airlines in the World (Top 10 Airlines in the World by Revenue and Brand value)

Largest Deserts in the World

Historical Monuments - Famous Landmarks - Famous Places With their Countries

Important International Days and Dates (With UNIQUE COLOR CODES, In January to December Order) - Complete List

Most Popular Newspapers in the World (Top World Newspapers)

Parliaments of Different Countries (Countries and Their Parliament Names)

Important Signs and Symbols with their Meanings (Complete List)

First in the World (List of First in the World, Male and Female) - The Complete List !!!

Intelligence Agencies of the World/ Intelligence Agencies

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World Population Live (Live Birth & Death Rate Live, Population by Religion, Population by Country)

What Happens Every SECOND! What Happens Every Second in the Universe, World, Our Body, Nature, Economy and on the Internet

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TOP 10 TOUGHEST EXAMS in the World

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Top Universities In India For MBA (By MHRD - NIRF Govt. of India, Official University Ranking)

Here you will get the Name of the University, City and State of the University, Overall Score and Rank in the country; according to MHRD (NIRF - National Institutional Ranking Framework) 2018 for Management Courses.


Indian Institute of Management Ahmedabad

   Ahmedabad Gujarat   79.18 1

Indian Institute of Management Bangalore 

   Bengaluru   Karnataka 77.33 2

Indian Institute of Management Calcutta 

    Kolkata   West Bengal 77.08   3

Indian Institute of Management Lucknow  

   Lucknow Uttar Pradesh   68.63   4

Indian Institute of Technology Bombay   

   Mumbai Maharashtra 66.80 5

Indian Institute of Management Kozhikode 

  Kozhikode Kerala 65.21 6

Indian Institute of Technology Kharagpur  

    Kharagpur West Bengal   63.36   7

Indian Institute of Technology Delhi 

     New Delhi Delhi   63.31 8

Indian Institute of Technology Roorkee 

    Roorkee Uttarakhand 62.95 9

Xavier Labour Relations Institute  

Jamshedpur Jharkhand 62.66   10

Indian Institute of Management Indore

     Indore Madhya Pradesh   60.28   11

Management Development Institute  

    Gurgaon Haryana 59.59   12

Indian Institute of Management Udaipur  

  Udaipur   Rajasthan   59.07 13

National Institute of Industrial Engineering 

    Mumbai Maharashtra 57.02   14

Indian Institute of Management Tiruchirappalli  

  Tiruchirappalli   Tamil Nadu 55.85 15

          Great Lakes Institute of   Management

         Chennai   Tamil Nadu 55.25 16

Indian Institute of Technology Kanpur 

   Kanpur Uttar Pradesh 53.43 17

Symbiosis Institute of Business Management  

  Pune Maharashtra 52.80 18

S. P. Jain Institute of Management & Research 

    Mumbai Maharashtra 52.31 19

Indian Institute of Management Kashipur    

  Kashipur Uttarakhand 51.20   20







































12 Aug 2018

PSAT Scores - PSAT Scores Range What is a Good PSAT Score and Average PSAT Score

What is a Good PSAT Score and PSAT Score Range ?

PSAT stands for Preliminary SAT. Do you know that you can get Scholarship with a good PSAT score and the PSAT score can help you in predicting, how will you perform on future tests like SAT and ACT.
This post will help you in comparing your PSAT score with PSAT Scores of other students.


PSAT score, PSAT scores range, good PSAT score


PSAT Scores Ranges

MATH PSAT Score Ranges 

Below 500 score         
*It is considered a Below Average Score
*This score is less than the average student’s PSAT score

500-550 Score
*It is a Good PSAT Score for Maths
*This score means, you have scored better than 50% of candidates.

560-610 Score
*It is a Competitive Score for PSAT Maths
*You are in top 25% of the testing population. This is considered to be a very good score in PSAT. It also means that you are preparing well for the SAT.

More than 620 Score
Congratulations!!! You are in the top 10% of the students who appeared in the exam. Now you have high chances of getting Scholarship too.

🌓READ THIS ALSO:-

GRE Vs GMAT-Is GRE better than GMAT !!!


Reading and Writing PSAT Score Ranges


Below 500 Score Range   
*It is a Below Average PSAT score for Reading and writing section
*This score is less than the average student’s PSAT score

500-550 Score
*It is considered a Good PSAT Score
*This score means, you have scored better than 50% of candidates

560-610 Score 
*A Competitive score
*You are in top 25% of the testing population. This is considered to be a very good score in PSAT. It also means you are preparing well for the SAT.

More than 620 Score
Now You are in the top 10% of the students who appeared in the exam. Now you can get the scholarship easily.


Combined PSAT Score 

Below 940 Score        
*Below Average score
*This score is less than the average student’s PSAT score

950-1060 Score
*Good score
*This score means, you have scored better than 50% of candidates who appeared in the PSAT.

1070-1200 Score
*Competitive score
*You are in top 25% of the testing population. This is considered to be a very good score in PSAT. It shows  you are preparing very well for the SAT.

1210-1520 Score
*You are in the top 10% of the students. 
*You can also get Scholarship Now.

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Why Doctors Wear White Coat and Lawyers Wear Black Coat

Why Dogs Cry at Night | Why Dogs Howl at Night | Why Dogs Bark at Night | Why Dogs Weep at Night

Why the Colour of School Bus is Yellow

Why all Planets and Stars are Round in Shape | Why all Planets are Sphere in Shape

How to Finish Whole Syllabus in ONE NIGHT (One Day) | How to Study for Exams | Night Before Exams Tips

Top 25 Amazing and Cool facts about United States of America (USA)

Facts about North America - North America Map and Globe - Continents of the World

FACTS about EUROPE - MAP of European Countries - European Continent Facts

Islands of North America - Interesting Facts about North American Islands that You Never Knew !!!

Top 10 Largest Airlines in the World (Top 10 Airlines in the World by Revenue and Brand value)

Largest Deserts in the World

Historical Monuments - Famous Landmarks - Famous Places With their Countries

Important International Days and Dates (With UNIQUE COLOR CODES, In January to December Order) - Complete List

Most Popular Newspapers in the World (Top World Newspapers)

Parliaments of Different Countries (Countries and Their Parliament Names)

Important Signs and Symbols with their Meanings (Complete List)

First in the World (List of First in the World, Male and Female) - The Complete List !!!

Intelligence Agencies of the World/ Intelligence Agencies

River Crossing IQ Logic Puzzles & Fun Brain Games (Boat Puzzle Solution/River and Boat Problems)

Famous QUOTES by Albert Einstein | Albert Einstein Quotes | Inspirational Quotes about Life

World Population Live (Live Birth & Death Rate Live, Population by Religion, Population by Country)

What Happens Every SECOND! What Happens Every Second in the Universe, World, Our Body, Nature, Economy and on the Internet

Top 10 Youtubers in the World and their Earnings | Most Subscribed Youtube Channel | Richest Youtubers in the World

TOP 10 TOUGHEST EXAMS in the World

Job Interview Questions and Answers for Fresh Graduates -Common Interview Questions

Top 20 Universities in Texas USA | Texas Universities Ranking

Honda CBX 1000 Engine Animation/CBX Clutch/Honda CBX/CBX 1000

GRE Syllabus 2018-2019- GRE Exam Pattern and Syllabus 2018 (Graduate Record Examinations Syllabus 2018-2019)

GMAT Exam Pattern and Syllabus 2018 - Latest Pattern of GMAT 2018 -Graduate Management Admission Test (GMAT)

GRE Vs GMAT - A Comparison of GRE and GMAT - Is GRE better than GMAT !!!

PSAT Scores - PSAT Scores Range What is a Good PSAT Score and Average PSAT Score

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GRE Vs GMAT - A Comparison of GRE and GMAT - Is GRE better than GMAT !!!

Here we will provide you the comparison between GRE (Graduate Record Examinations) and GMAT (Graduate Management Admission Test). So let's analyse-


Why GRE or GMAT ?

GRE- Most graduate schools and many business schools require GRE score
GMAT- The test is necessary for admission to most business schools


GRE vs GMAT, Why GRE, WHY GMAT, GRE or GMAT, GRE cost, GMAT cost


Test Structure of GRE and GMAT

GRE Exam Pattern
*A 60 minutes Analytical Writing section having 2 essays of 30 minutes each.  
*Two 35 minutes Quantitative Reasoning sections
*A 30-35 minutes experimental section that can be either math or verbal
 *It also contains two 30-minutes Verbal Reasoning sections 
GMAT Exam Pattern
*A 30 minutes Analytic section with one essay
*A 30 minutes Integrated Reasoning section
*75 minutes Verbal section.
*75 minutes Quantitative section 

🌓READ THIS ALSO:-

GRE Exam Pattern and Syllabus 2018 


Test Format of GRE and GMAT

GRE Test Format
GRE is Offered as a computer adaptive by section exam
GMAT Test Format 
GMAT is a computer-adaptive test


How GRE and GMAT are Scored ?

GRE Score Calculation 
Verbal and Quantitative scores from 130 to 170 in 1-point increments
GMAT Score Calculation
In case of GMAT, the overall or composite GMAT score ranges from 200 to 800 in 10-point increments

🌓READ THIS ALSO:-

GMAT Exam Pattern and Syllabus 2018 


GRE and GMAT Cost

GRE Cost
GRE costs around $195
GMAT Cost
GMAT cost is nearly $250


GRE and GMAT Exam Durations


GRE Exam Duration
Using paper - 3.5 hours  
Using computer- 3.75 hours 
GMAT Exam Duration
It is of 3.5 hours


GRE and GMAT Score Validity

Validity of GRE Score
GRE score validity period is 5 years
GMAT Score Validity
GMAT Score is valid for 5 years


Go to HOME PAGE

Why Doctors Wear White Coat and Lawyers Wear Black Coat

Why Dogs Cry at Night | Why Dogs Howl at Night | Why Dogs Bark at Night | Why Dogs Weep at Night

Why the Colour of School Bus is Yellow

Why all Planets and Stars are Round in Shape | Why all Planets are Sphere in Shape

How to Finish Whole Syllabus in ONE NIGHT (One Day) | How to Study for Exams | Night Before Exams Tips

Top 25 Amazing and Cool facts about United States of America (USA)

Facts about North America - North America Map and Globe - Continents of the World

FACTS about EUROPE - MAP of European Countries - European Continent Facts

Islands of North America - Interesting Facts about North American Islands that You Never Knew !!!

Top 10 Largest Airlines in the World (Top 10 Airlines in the World by Revenue and Brand value)

Largest Deserts in the World

Historical Monuments - Famous Landmarks - Famous Places With their Countries

Important International Days and Dates (With UNIQUE COLOR CODES, In January to December Order) - Complete List

Most Popular Newspapers in the World (Top World Newspapers)

Parliaments of Different Countries (Countries and Their Parliament Names)

Important Signs and Symbols with their Meanings (Complete List)

First in the World (List of First in the World, Male and Female) - The Complete List !!!

Intelligence Agencies of the World/ Intelligence Agencies

River Crossing IQ Logic Puzzles & Fun Brain Games (Boat Puzzle Solution/River and Boat Problems)

Famous QUOTES by Albert Einstein | Albert Einstein Quotes | Inspirational Quotes about Life

World Population Live (Live Birth & Death Rate Live, Population by Religion, Population by Country)

What Happens Every SECOND! What Happens Every Second in the Universe, World, Our Body, Nature, Economy and on the Internet

Top 10 Youtubers in the World and their Earnings | Most Subscribed Youtube Channel | Richest Youtubers in the World

TOP 10 TOUGHEST EXAMS in the World

Job Interview Questions and Answers for Fresh Graduates -Common Interview Questions

Top 20 Universities in Texas USA | Texas Universities Ranking

Honda CBX 1000 Engine Animation/CBX Clutch/Honda CBX/CBX 1000

GRE Syllabus 2018-2019- GRE Exam Pattern and Syllabus 2018 (Graduate Record Examinations Syllabus 2018-2019)

GMAT Exam Pattern and Syllabus 2018 - Latest Pattern of GMAT 2018 -Graduate Management Admission Test (GMAT)

GRE Vs GMAT - A Comparison of GRE and GMAT - Is GRE better than GMAT !!!

PSAT Scores - PSAT Scores Range What is a Good PSAT Score and Average PSAT Score

Top Universities In India For MBA (By MHRD - NIRF Govt. of India, Official University Ranking)

Etymology/Mnemonic Techniques)/Word Roots Vocabulary for GRE, SAT, ACT

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We Wish You a Merry Christmas Song LYRICS in English (Female Version) -Christmas Songs with Lyrics