Engineering_Basics_____Presentation.pptx

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1. Engineering Basics Introduction, Types, Drawings, Dimensions, and Rules

2. Introduction of Engineering Definition – Engineering applies science and mathematics to create solutions for real-world problems. Purpose – To design, build, and innovate systems, machines, and structures for human benefit. Branches – Major fields include Civil, Mechanical, Electrical, Computer, and Chemical Engineering. Impact – Engineering drives progress in technology, infrastructure, and sustainable development.

3. Types of Engineering in Core Fields Civil Engineering – Design, construction, and maintenance of buildings, roads, bridges, and infrastructure. Mechanical Engineering – Machines, engines, manufacturing, and mechanical systems. Electrical Engineering – Electricity, power systems, electronics, and communication technologies.

4. Types of Engineering Drawing Continuous Thick Line – Visible outlines and edges. Continuous Thin Line – Dimension lines, projection lines, and hatching. Dashed Line – Hidden edges and features. Chain Line – Center lines, axis of symmetry, and paths of motion.

5. Types of Pencil Used in Engineering Drawing Hard Grade (H, 2H, 3H, 4H) – Fine, thin, and light construction lines. Medium Grade (HB, F, H) – General drawing and lettering. Soft Grade (B, 2B, 3B, 4B) – Dark, thick, and bold outlines or shading.

6. Types of Dimensions in Engineering Graphics Length – Measurement of how long a shape or object is. Width (Breadth) – Measurement of how wide the shape is. Height (Depth/Thickness) – Measurement of how tall or thick the object is. Diameter/Radius – For circles and curves.

7. Types of Polygon Triangle – Three-sided polygon for trusses and structures. Quadrilateral – Four-sided polygons (squares, rectangles). Pentagon & Hexagon – Five- and six-sided shapes for mechanical parts. Irregular Polygons – Custom complex components.

8. Dimension Rules in Shapes Clear Placement – Dimensions should be outside the shape for clarity. Accuracy – Show exact measurements, including units and tolerances. Consistency – Use uniform text size, line style, and spacing. Avoid Redundancy – Dimension each feature only once.

9. Types of Drawing in Engineering Drawing Freehand/Sketch Drawing – Quick, informal representation of ideas. Working/Detail Drawing – Exact dimensions and specifications. Assembly Drawing – Shows how different parts fit together. Installation/Isometric Drawing – Guides setup or 3D assembly.