Concepts, Short Tricks & Questions (1)

Duration: 1 hr 2 min

This video lesson is available to enrolled students.

Return to /learn/DSSSB-TGT-COMPUTER-SCIENCE-COMPLETE-COURSE/general-intelligence-reasoning-ability/directions-direction-test/basic-concepts-terminologies-and-formulas/asset-concepts-short-tricks-questions-1-6597 after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Section A: General Awareness: Polity, Physics, Biology, Chemistry, Static General Knowledge, History, Geography, Indian Economy, GK- Current Affairs, Evolution of Indian Banking (Banking & Financial Awareness), Environment
  3. Section A: General Intelligence & Reasoning ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Analytical Reasoning (Counting Figures Reasoning), Blood Relations, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Directions (Direction Test), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Crypt Arithmetic, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence, TCS NQT Advanced Reasoning Ability
  4. Section A: Arithmetical & Numerical Ability: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Powers and Exponents (Surds and Indices), Algebra, Probability, Mental Ability, Age Problems, Partnership, Statistics, Arithmetic, Speed Mathematics and Basic Mathematics, Miscellaneous
  5. Section A: English Language & Comprehension: Vocabulary, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Articles, Sentence Construction, Preposition, Direct and Indirect Speech, Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Modals, Active Passive Voice (Voice), Sentence Correction (Error Correction), Adverb, Conjunction, Cloze Test (Cloze Passage)
  6. Section A: Hindi Language & Comprehension: भाषा, लिपि, ध्वनि, वर्ण, अक्षर, स्वर, व्यंजन, मात्रा और संयुक्ताक्षर, वर्तनी, वर्ण-विन्यास, अनुस्वार, अनुनासिक, चंद्रबिंदु और ‘र’ के रूप, शब्द, पद और शब्द-भेद, संज्ञा और सर्वनाम, विशेषण और क्रिया, लिंग, वचन, पुरुष और कारक, काल, वाच्य, वाक्य और वाक्य-भेद, संधि, समास, विलोम शब्द, पर्यायवाची शब्द, सामान्य अशुद्धियाँ, अनेक शब्दों के लिए एक शब्द, मुहावरे और लोकोक्तियाँ, अपठित गद्यांश और अपठित पद्यांश, Multi-Topic Content (Cross-Concept Material), वर्णमाला
  7. Section B: Programming, Data Structures, OOP & Java: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Language Design, Intro to Compilers, Visual Basics, Syntax Analysis: Bottom-Up, Object Oriented Technology
  8. Section B: Computer Networks, TCP/IP & Network Security: Introduction to CN, Data Communication, DLL: Flow Control, DLL: Access Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Access Technologies, Network Security, Society, Law & Ethics, Mobile Computing, Net Layer:Routing Protocol, Cyber Safety and Security
  9. Section B: Teaching Methodology: Child Development, Concept of Pedagogy, Theories, Inclusive Education, Experiential Pedagogy, Assessment & Evaluation, Curriculum Framework & Reforms, National Education Policy (NEP) 2020, Psychology, Teaching-Learning Process, Personality Development, Teaching Methods & Strategies, Learning and Motivation, Learners & Learning Process, Factors Affecting Teaching, Methods of Teaching, Nature, Objectives & Characteristics of Teaching, Teaching-Learning Aids & ICT Integration, Classroom Management & Communication, Evaluation, Assessment & Measurement, Curriculum & School Environment, Inclusive Education & Special Needs, Professional Development & Ethics
  10. Section B: Digital Electronics / Boolean Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Analog-Digital Conversion
  11. Section B: Operating Systems & Linux: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, File Management, Disc Scheduling, Unix OS, Linux OS, Distributed Systems, Windows OS
  12. Section B: Data Base Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, File Organization & Indexing, Transaction Management, Concurrency Control, Database Security & Authorization, Database Recovery, Data Warehousing & Mining
  13. Section B: Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, HTML Basics, CSS, Emerging Technologies, JavaScript-Basics, .Net Programming, Electronic Data Interchange and E-Commerce, XML
  14. Section B: Computer Fundamentals, IT Basics & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer, Terms & Abbreviations, MS Office Applications, Instr Formats & Modes, Floating Point Rep, Artificial Intelligence, साइबर सुरक्षा / Cyber Safety and Security, कंप्यूटर सॉफ़्टवेयर / Computer Software, ऑपरेटिंग सिस्टम / Operating System, वर्ड प्रोसेसिंग (MS Word) / Word Processing (MS Word), कंप्यूटर नेटवर्क / Computer Networks
  15. Section B: Python Language: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  16. Section B: Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, extras, Fundamentals of Systems and Information Systems
  17. Section B: Design & Analysis of Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  18. Section B: Mathematics: Linear Algebra, Calculus, Trigonometry, Vectors, Set Theory, Functions, Relations, Propositional and Predicate Logic, Research Process Steps, Graph Theory, Number System & Place Value, Factors, Multiples, Divisibility, HCF & LCM, Mensuration — Perimeter, Area, Surface Area, Volume, Data Handling, Graphs & Probability, Coordinates & Graphs, Higher Mathematics — Trigonometry, Quadratics, Polynomials, Progressions, Statistics, Logarithms, समतल क्षेत्रमिति / Plane Mensuration, प्रतिचयन / Sampling
  19. Section B: Computer Graphics, Multimedia & Mobile Computing: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, 3-D Object Representation, Geometric Transformations and Viewing, Multimedia
  20. Section B: Emerging Trends: Emerging Tech Trends, Knowledge Representation, Natural Language Processing
  21. DSSSB Previous Year Paper:
  22. Business Studies and Management: Business Communication, Business Organization and Management, Financial Accounting, Business Economics, Management Information System (MIS), Knowledge Management & New Economy
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video is a comprehensive educational lecture on 'Direction Sense' for competitive exams, presented by an instructor from Knowledge Gate Eduventures. The lesson begins with an introduction to the topic, followed by a detailed explanation of the four main cardinal directions (North, South, East, West) and the four intercardinal directions (North-East, North-West, South-East, South-West). The instructor uses a whiteboard to draw a compass rose and explains that the angle between any two main directions is 90 degrees, and between a main and intercardinal direction is 45 degrees. The concept of clockwise and anti-clockwise turns is introduced to determine right and left directions. The core of the lesson involves solving various problems, including those based on the concept of shadows. The instructor explains that at sunrise, the sun is in the east, so shadows fall towards the west, and at sunset, the sun is in the west, so shadows fall towards the east. This principle is applied to solve multiple-choice questions. The lecture also covers problems involving Pythagoras' Theorem to calculate the straight-line distance from a starting point after a series of directional movements. The instructor uses a step-by-step approach, drawing diagrams for each problem to illustrate the path taken and the final position. The video concludes with a summary of the key concepts and a call to action to download the KG app.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card featuring a compass and the word 'DIRECTIONS'. It then transitions to a lecture where the instructor, Yash Jain, stands in front of a screen. The screen displays a video clip with the Hindi text 'इधर चला में उधर चला' (I went this way, he went that way). The instructor is introducing the topic of direction sense, using the clip as a visual aid to illustrate the concept of movement in different directions.

  2. 2:00 – 5:00 02:00-05:00

    The instructor continues his lecture, now with a new visual on the screen showing a man and a woman walking in the rain. The text on the screen reads 'पाद बहुत जरूरी है भाई' (Foot is very important, brother). The instructor uses this clip to discuss the concept of direction, emphasizing the importance of understanding one's orientation. He then transitions to a new slide titled 'Direction Sense' with a compass diagram, explaining the four main directions: North, South, East, and West.

  3. 5:00 – 10:00 05:00-10:00

    The instructor explains the concept of angles in direction sense. He states that the angle between two main directions is 90 degrees and between a main and an intercardinal direction is 45 degrees. He uses the whiteboard to draw a compass and writes 'Clockwise' and 'Anti-clockwise' to explain how to determine right and left turns. He then presents an example: 'A boy is facing towards west and turns 45° clockwise. So in this case Boy will turn on his right side 45°.' He draws a diagram to illustrate this.

  4. 10:00 – 15:00 10:00-15:00

    The lecture moves to the application of Pythagoras' Theorem. The instructor explains that the theorem is used to find the distance between two points. He draws a right-angled triangle on the whiteboard, labeling the sides as 'Perpendicular', 'Base', and 'Hypotenuse'. He writes the formula: (Hypotenuse)² = (Perpendicular)² + (Base)². He then uses this to solve a problem about a person walking in different directions and calculating the final distance from the starting point.

  5. 15:00 – 20:00 15:00-20:00

    The instructor introduces the concept of shadows, starting with 'Concept of Shadow (Sunrise)'. He draws a diagram of the sun rising in the east and explains that since the sun is in the east, shadows will fall towards the west. He writes 'Sunrise' and 'North → left' on the board. He then moves to 'Concept of Shadow (Sunset)', explaining that the sun is in the west, so shadows fall towards the east. He writes 'Sunset' and 'North → right'.

  6. 20:00 – 25:00 20:00-25:00

    The instructor presents a problem based on the shadow concept: 'One morning after sunrise, Anup Ji was standing facing a pole. The shadow of the pole fell exactly to his right. To which direction was he facing?'. He draws a diagram, showing the sun in the east, the pole, and the shadow falling to the right. He explains that since the shadow is to the right, and the sun is in the east, he must be facing south. He then moves to another problem involving a person named Kaleen Bhaiya at 1:48 PM.

  7. 25:00 – 30:00 25:00-30:00

    The instructor discusses a problem about two people, James and Henry, standing facing each other at 8 AM. The question states that the shadow of Henry fell exactly to his right. The instructor explains that at 8 AM, the sun is in the east, so shadows fall towards the west. He draws a diagram showing Henry facing a certain direction, with his shadow to his right. He concludes that Henry is facing north, and therefore James, who is facing him, is facing south.

  8. 30:00 – 35:00 30:00-35:00

    The instructor presents a complex problem involving a series of movements: 'Your Girlfriend is walking towards South-West for 15 miles, turns right and walks another 10 miles. She then turns 90° Clockwise and walks 10 miles. Now, she again turns left and walks 30 miles. Which direction is she facing?'. He draws a diagram on the whiteboard, showing the path taken, and explains each turn step-by-step to determine the final direction.

  9. 35:00 – 40:00 35:00-40:00

    The instructor moves to a problem involving Pythagoras' Theorem: 'Kapil Sharma walks 12kms towards east. He turns 90° clockwise and walks 20kms then he turned right and walked for 33kms. How far is he from starting point?'. He draws a diagram of the path, which forms a right-angled triangle, and uses the formula to calculate the distance. He calculates the final distance as 29 km.

  10. 40:00 – 45:00 40:00-45:00

    The instructor presents another problem: 'Anjali walked 13 meters towards South from her House. She turned left and walked 10 meters. She took a left turn and walked 5 meters and then she turned right and walked for 5 meters. How far is she from her House and in which direction?'. He draws a diagram, showing the path as a rectangle with an additional segment. He calculates the final distance using Pythagoras' Theorem, finding the distance to be 17 meters in the South-East direction.

  11. 45:00 – 50:00 45:00-50:00

    The instructor continues to solve the Anjali problem. He draws a diagram on the whiteboard, showing the path taken. He calculates the final distance using Pythagoras' Theorem, finding the distance to be 17 meters in the South-East direction. He then summarizes the key concepts of direction sense, including the use of a compass, angles, and Pythagoras' Theorem.

  12. 50:00 – 55:00 50:00-55:00

    The instructor discusses a problem involving a person named Kapil Sharma. He explains that Kapil walks 12 km east, then turns 90 degrees clockwise (which is south) and walks 20 km, then turns right (which is west) and walks 33 km. He draws a diagram to illustrate the path and uses Pythagoras' Theorem to calculate the final distance from the starting point, which is 29 km.

  13. 55:00 – 60:00 55:00-60:00

    The instructor presents a problem about a person named Anjali. She walks 13 meters south, turns left (east), walks 10 meters, turns left (north), walks 5 meters, turns right (east), and walks 5 meters. He draws a diagram on the whiteboard, showing the path taken. He calculates the final distance from her house using Pythagoras' Theorem, finding the distance to be 17 meters in the South-East direction.

  14. 60:00 – 61:37 60:00-61:37

    The video concludes with a summary of the key concepts. The instructor recaps the main points of the lesson, including the four main directions, the angles between them, the concept of clockwise and anti-clockwise turns, and the application of Pythagoras' Theorem. He encourages viewers to download the KG app to access all their courses. The final screen shows the Knowledge Gate logo and website.

This video provides a comprehensive and structured lesson on 'Direction Sense' for competitive exams. The instructor begins by establishing the fundamental concepts of the four cardinal and intercardinal directions, using a compass diagram to illustrate the 90-degree and 45-degree angles between them. He then introduces the principles of clockwise and anti-clockwise turns to determine right and left directions. A significant portion of the lecture is dedicated to applying these concepts to solve problems, with a strong emphasis on the use of Pythagoras' Theorem to calculate the straight-line distance from a starting point after a series of directional movements. The instructor also covers the practical application of shadows, explaining how the position of the sun at sunrise and sunset determines the direction of shadows, which is used to solve multiple-choice questions. The lesson is highly visual, with the instructor using a whiteboard to draw diagrams for each problem, making the concepts clear and easy to follow. The video concludes with a summary of the key takeaways and a call to action to access more courses through the Knowledge Gate app.

Loading lesson…