12 Aug 2018

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

Graduate Management Admission Test (GMAT) is an international level exam for MBA. Nearly 2300 graduate business schools accept the GMAT exam score around the world. Here we will discuss the syllabus for GMAT. You will also find the GMAT exam pattern here.


Analytical Writing Assessment (GMAT)

*One question is asked from this section. The type of question asked in this section is analysis of an argument.
*It is of 30 minutes duration and 
*Score range is 0-6 in 0.5 point increments.


GMAT Exam Pattern and Syllabus 2018 Video


 

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Integrated Reasoning (GMAT)

*It consists of 12 questions. 
*The type of questions in this section include- multi source reasoning, graphics interpretation, table analysis and two part analysis. 
*This section is of 30 minutes. 
*The score range is 1-8 in one point increments.


Quantitative Reasoning (GMAT)

*This section contains 37 questions
*The type of questions asked are data sufficiency and problem solving. 
*Duration of the section is 75 minutes and 
*Score is 0-60 in one point increments

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GRE Exam Pattern and Syllabus 2018 

Verbal Reasoning (GMAT)

*Verbal reasoning section contains 41 questions *Comprehension, critical reasoning, sentence correction are types of questions asked in this section. 
*Verbal reasoning section is of 75 minutes and
*Score Range is 0-60 in one point increments.


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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

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

Word Roots (Etymology/Mnemonic Techniques)/Vocabulary for SAT, ACT, GRE, IELTS and TOEFL and CAT


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

10 Aug 2018

Acceptance Angle and Numerical Aperture (NA) (Optical Fiber Communication)

In this post we will discuss two important concepts of optical fibers, these are- Acceptance Angle and Numerical Aperture (NA).

Definition of Acceptance Angle

Acceptance angle is the maximum angle with the axis of the Optical Fiber at which the light can enter into the optical fiber in order to be propagated through it.

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Optical Fiber Communication (Complete)

Now let's understand this concept with the help of this diagram-


Acceptance Angle and Numerical Aperture (NA), optical fibers, Acceptance Angle, Numerical Aperture (NA)
Acceptance Angle and Numerical Aperture (NA) in Optical Fiber

This diagram clearly illustrates the concept of the numerical aperture and acceptance angle. What we mean by Acceptance cone, is also explain here.


Watch the Complete Video Here


 


Structure and Working of the Optical Fiber

Now observe this diagram carefully, two layers of the Optical Fiber- Core and Cladding can be seen in the diagram. These are drawn in pink color. The light rays propagate inside the core that has another layer over it, known as cladding.
Although other protective layers are also there over the cladding layer, But only core and cladding are shown in this image, which is enough to clear the concepts.

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OPTICAL FIBER SOURCES (DESIRABLE PROPERTIES)

The refractive index (the ratio of speed of light in vacuum and the speed of light in the medium) of the core is more than the refractive index of the cladding.
As we also know that, when a light ray propagates from a denser medium to the rarer medium, it deviates away from the normal. But when the angle of incidence is more than the critical angle then this light ray returns back into the same medium. This phenomena is called as the 'Total Internal Reflection' (TIR). 
Although it is a special case of refraction where the incidence angle is more than the critical angle, but here it seems like a reflection phenomena and the light ray is totally reflected back into the same medium. Therefore this phenomena is known as the Total Internal Reflection (TIR).

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OPTICAL FIBER: STRUCTURE AND WORKING PRINCIPLE

The same phenomena of total internal reflection takes place in the optical fibre. Here the core acts as a denser medium while the cladding as a rarer medium. So the light rays propagate inside the core of the optical fiber with the total internal reflections.
But as we have already discussed that for the total internal reflection to take place, it is required that the incidence angle must be more than the critical angle. If this condition is satisfied then the light ray can propagate inside the core of The optical fiber with total internal reflection.

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ADVANTAGES OF OPTICAL FIBER COMMUNICATION
Single-Mode Optical Fiber Advantages

Now again observe the image. This image shows two light rays. Focus on any one light ray. You will see that total internal reflection takes place inside the core every time at the core cladding interface. The reflected ray after total internal reflection acts as the incident ray for the next total internal reflection. As each time the incidence angle is more than the critical angle at the core cladding interface. Therefore the light ray propagates inside the core of The optical fibre with successive total internal reflections.

NOTE- For much better explanation, I suggest you to watch my video lecture given above on this page.


Acceptance Angle and Acceptance Cone

Now first we will understand the concept of acceptance cone. You can see this acceptance cone in the image given above. For the total internal reflection to take place, it is required that the light rays entering into the fibre must be confined to this cone.
It means that if there is any light ray that is entering into the fiber with an angle which is outside this cone, then the total internal reflection will not take place. Because in this case the incidence angle will be smaller than the critical angle (Visualize this condition by observing the image or you may watch the video given here). 

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Graded Index Fibers: Basics, Structure and Working

You can understand it easily with the help of this image also. According to this image, if the angle theta 1 reduces to a certain limit then this light ray goes out of the acceptance cone.
In other words we can say, if the light ray is out of the acceptance cone, then the incidence angle is smaller than the critical Angle and in this case total internal reflection will not take place.

Now you know the concept of acceptance cone. So it is very easy to understand, what is acceptance angle.
Acceptance angle is just the conical half angle of the acceptance cone. This acceptance angle is shown in the diagram here.

As already defined, "Acceptance angle is the maximum angle with the axis of the optical fiber at which light can enter the fiber, in order to be propagated through it".
The light rays that are outside this acceptance cone are not accepted by the optical fiber, that's why it is known as acceptance cone.

Let's now discuss what is Numerical Aperture...


Numerical Aperture (NA)

Numerical aperture in case of optical fiber communication can be defined as- "The light gathering (collecting) capacity of an optical fibre".

The numerical aperture provides important relationship between acceptance angle and the refractive index of the core and cladding.

These relationships are given here in the image below-


Formulas for Numerical Aperture (NA) and Acceptance Angle

Acceptance Angle and Numerical Aperture formula, Numerical Aperture formula
Numerical Aperture and
Acceptance Angle Formulas

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

STEP INDEX OPTICAL FIBER (MULTIMODE AND SINGLE MODE STEP INDEX FIBERS)

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)

PULSE CODE MODULATION (PCM) [ADVANTAGES AND DISADVANTAGES]

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

Conventional AM Vs DSB-SC Vs SSB-SC Vs VSB (Comparison of AM Systems)

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

Single-Mode Optical Fiber Advantages

What are Microwaves and their Applications (Uses) in various fields

Microwaves Properties and Advantages (Benefits)

Basic Structure of Bipolar Junction Transistor (BJT) - BJT Transistor - Working and Properties

Polar Plots of Transfer Functions in Control Systems (How to Draw Nyquist Plot Examples)

Generation of Binary Phase Shift Keying (BPSK Generation) - Block Diagram of Binary Phase Shift Keying (BPSK)

Low Level and High Level Modulation Block Diagram (AM Transmitter Block Diagram)

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

Frequency Translation/Frequency Mixing/Frequency Conversion/Heterodyning (Basic Concepts and Need)

Quadrature Phase Shift Keying Modulation (QPSK) Basics, Waveform and Benefits

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


7 Aug 2018

Current Affairs 7 August 2018 in Hindi/ Daily Current Affairs and News/ करेंट अफेयर्स हिंदी

आंध्र प्रदेश में मुख्यमंत्री द्वारा दुनिया की पहली थर्मल बैटरी का उद्घाटन किया गया

*मुख्यमंत्री चंद्रबाबू नायडू ने आंध्र प्रदेश के अमरावती में दुनिया का पहला उच्च ऊर्जा भंडारण उपकरण लॉन्च किया
*इसकी लागत लगभग 660 करोड़ रुपए है
*इसकी क्षमता वर्तमान में 1000 मेगावाट है जिसे बाद में बढ़ा दिया जाएगा
*इस उच्च ऊर्जा भंडारण उपकरण को भारत एनर्जी स्टोरेज टेक्नोलॉजी प्राइवेट लिमिटेड (बेस्ट) द्वारा निर्मित किया गया है


भारत का पहला ह्यूमेनोइड रोबोट 'रश्मी' विकसित किया गया

*रणजीत श्रीवास्तव ने भारत का प्रथम ह्यूमेनोइड रोबोट 'रश्मी' विकसित किया
*इसे हॉन्गकॉन्ग आधारित कंपनी द्वारा बनाए गए ह्यूमेनोइड रोबोट 'सोफिया' का भारतीय संस्करण भी बोला जा रहा है
*यह रोबोट हिंदी, अंग्रेजी, भोजपुरी तथा मराठी भाषाएं बोल सकता है
*इस रोबोट को बनाने में आर्टिफिशियल इंटेलिजेंस (AI) का उपयोग किया गया है


स्टार्टअप अकादमिक गठबंधन कार्यक्रम लॉन्च किया गया

*भारत में उद्यमिता की भावना को बढ़ाने के लिए स्टार्टअप इंडिया ने 'स्टार्टअप अकादमिक गठबंधन कार्यक्रम' लॉन्च किया

Current Affairs 6 August 2018 in Hindi/ Daily Current Affairs and News/ करेंट अफेयर्स हिंदी

भगोड़ा आर्थिक अपराधी विधेयक को राष्ट्रपति रामनाथ कोविंद ने मंजूरी दी

*राष्ट्रपति की मंजूरी मिलने के बाद यह विधेयक अपराधियों को कानूनी प्रक्रिया से बचकर देश से भागने पर रोक लगाएगा
*इस विधेयक के अनुसार दोषी व्यक्ति को भगोड़ा घोषित करके उसकी संपत्ति जब्त की जा सकती है


चीन ने अपने अत्याधुनिक हाइपरसोनिक एयरक्राफ्ट जिंगकोंग-2/स्टारी स्काई-2 का सफल परीक्षण किया

*इस हाइपरसोनिक एयरक्राफ्ट की खास बात यह है कि यह किसी भी एंटी मिसाइल रक्षा प्रणाली को भेद सकता है
*यह एयरक्राफ्ट परमाणु हथियार ले जाने में भी समर्थ है


बेंगलुरु में डिफेंस इंडिया स्टार्टअप चैलेंज लॉन्च किया गया

*रक्षा मंत्री निर्मला सीतारमण ने बेंगलुरु में डिफेंस इंडिया स्टार्टअप चैलेंज लॉन्च किया


अब उत्तर प्रदेश का मुगलसराय रेलवे जंक्शन बना दीनदयाल उपाध्याय जंक्शन

*उत्तर प्रदेश के प्रतिष्ठित मुगलसराय रेलवे जंक्शन का नाम बदलकर दीनदयाल उपाध्याय जंक्शन रेलवे स्टेशन रख दिया गया है


यूनाइटेड किंगडम (UK) द्वारा नया अंगदान कानून जारी किया गया

*UK ने देश में भारतीय मूल के नागरिकों के लिए अंग और ऊतक दान कानून जारी किया
*इस कानून के बाद अंगों की तत्काल आवश्यकता पूरी की जा सकेगी

4 Aug 2018

Intelligence Agencies of the World/ Intelligence Agencies

Here are the World's Famous Intelligence Agencies

Central Intelligence Agency (CIA),
Federal Bureau of Investigation (FBI) - United States of America (USA)

Top Intelligence Agencies  of the World, Intelligence Agencies of the World, best Intelligence Agencies of the World, Top Intelligence Agencies
Top Intelligence Agencies
of the World

Research and Analysis Wing (RAW),
Intelligence Bureau (IB),
Central Bureau of Investigation (CBI) - India

Canadian Securities Intelligence Services
Criminal Intelligence Service - Canada

Bureau of State Security - South Africa

Aisi Internal " Information and Security Agency" - Italy

Australian Security and Intelligence Organisation (ASIO) - Australia

Secretariat of Intelligence (SI)
National Intelligence School (ENI) - Argentina

New Zealand Intelligence Agency
Security Intelligence Service- New Zealand

State Intelligence Service (SIS) - Sri Lanka

Joint Intelligence Organisation (JIO)
Military Intelligence (MI) - 5 and 6, Special Branch (SB) - United Kingdom

BND - Germany

Intelligence System of Portuguese Republic (SIRP) - Portugal

Mossad - Israel

Central External Langa Department (CELD) - China

NIACHO - Japan

KGB/GRU - Russia

General Directorate for Internal Security (DGSE) - France

Almukhbirat - Iraq

Special Detective Unit (Police Intelligence) - Ireland

Sawac, Ministry of Intelligence - Iran

Al-Mukhabarat - Egypt

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World Famous Historical Monuments and Landmarks, World Famous Historical Monuments, World Famous Landmarks
World Famous Historical
Monuments and Landmarks

First in the World  (Male and Female), First in the World
First in the World
(Male and Female)

Largest Deserts in the World, deadliest Deserts in the World, biggest Deserts in the World
Largest Deserts in the World

Amazing Facts about United States of America, Amazing Facts about USA, Facts about USA
25 Amazing Facts about
United States of America (USA)

Interesting Facts about Europe, Facts about Europe, amazing Facts about Europe
25 Interesting Facts
about Europe

Cool Facts about North America, Facts about North America, interesting Facts about North America, amazing Facts about North America
Cool Facts about North America

Important Islands of North America, islands of  North America
Important Islands of
North America

Parliaments and Countries, Parliaments and their Countries, Countries and parliaments, parliaments of the world
Parliaments and Countries

Signs and Symbols, Important Signs and Symbols, Signs and Symbols with their Meanings
Important Signs and Symbols
with their Meanings

World's largest airlines, Top 10 Largest Airlines  in the World, Largest Airlines in the World
Top 10 Largest Airlines
in the World

Most Popular Newspapers
in the World

Important International
Days and Dates









































30 Jul 2018

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

Here is the List of First in the World that includes, both First Male and First Female in the World-

First in the World (Male and Female)


First man to set foot on the moon - Neil Armstrong


Neil Armstrong- First Man to Step on the Moon, Neil Armstrong, First Man to Step on the Moon, Armstrong
Neil Armstrong- First Man
to Step on the Moon

First man to go into space - Yuri Gagarin (USSR)

First woman to go into space - Valentina Tereshkova (USSR)

First man to climb Mount Everest - Sherpa Tenzing Norgay and sir Edmund Hillary

First physically challenged person to climb Mount Everest - Tom Whitker

First woman to climb the Mount Everest -  Junko Tabei (Japan)

First man to climb Mount Everest twice - Nawang Gombu

First person to sail around the world - Ferdinand Magellan

First woman president of a country - Maria Estela Peron (Argentina)

First woman Prime Minister of a country - S Bhandarnayake (Sri Lanka)

First premiere of Chinese Republic - Mao Tse-Tung

First Person to tell about planetary motion and solar system - Nicolous Copernicus

First prime minister of Great Britain - Robert Walpole

First president of United States of America - George Washington


George Washington: First President of the USA, George Washington, First President of the USA
George Washington:
First President of the USA

First female Prime Minister of Britain - Margaret Thatcher

First president of the Republic of China - Dr Sun Yat-Sen

First country to produce silk - China

First Country to print books  - China

First country to make map - Sumaria

First woman who crossed the Seven Seas - Bula Chaudhary

First country to bar smoking - Bhutan

Youngest astronaut - Gherman Stepanovich Titov 

First cricket club - Melbourne Cricket Club (MCC), Australia

Eldest person who climbed on the Mount Everest - Richard Boss

First unmanned Mission on moon - Eagle

First space shuttle launched - Columbia

First spaceship to land on Mars - Viking-1

First country to start national song - Japan

First woman to reach Antarctica - Caroline Michaelson

First person to reach on the South Pole alone - Craig Arlig

First person to reach to North Pole and South pole of the earth - Roald Amundsen

First man who reached the North Pole - Robert Peary

First European to visit China - Marco Polo

First Indian to go to space - Rakesh Sharma

First man to build rocket - Robert Hutchinson Hoggard

First space tourist - Dennis Tito

First artificial satellite launched by US - Explorer

First space vehicle to land on any asteroid - EROS in 2001

First female chancellor of Germany - Angela Dorothea Merkel

First woman president of Australia - Julia Gillard

First country to make a constitution - America

World's first atomic energy plant -  EBR (USA)

First man to live in space for maximum time - Valeri Vladimirovich Polyakov

First unmanned mission on moon - LUNA-9

First spaceship to carry man on moon - Apollo-11

First American to go into space - Edward Height

First man to climb on Mount Everest without oxygen - Phu Dorji Sherpa

First country to organise modern olympic games - Greece

First country to win football world cup match - Uruguay

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World Famous Historical Monuments and Landmarks, World Famous Historical Monuments, World Famous Landmarks
World Famous Historical
Monuments and Landmarks


Top Intelligence Agencies
of the World