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ENGINEERING DRAWING & DESIGN ANSWERS (TYPE A)
SECTION A
INSTRUCTIONS: ANSWER ALL QUESTIONS.
(1)
(Draw the diagram)
An oblique cone has its apex shifted to the side so the axis is slanted, giving the cone a tilted appearance, while a right cylinder has a straight vertical axis with its circular top directly above the base, making its sides perfectly upright.
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(2)
(i) T-Square: Used for drawing horizontal lines and for guiding set squares when drawing vertical or inclined lines.
(ii) Set-square: Used to draw vertical, inclined, and perpendicular lines at standard angles.
(iii) Drawing Compass: Used to draw circles and arcs of different sizes. It ensures precision in creating curved shapes.
(iv) Drawing Pencils: Different grades of pencils give different line weights. They are used for construction lines, detailed work, and lettering.
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(3)
Scalar quantity is a physical measurement expressed only by magnitude (e.g., length, mass) WHILE Resultant is a vector quantity representing the combined effect of two or more vectors, with magnitude and direction.
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(4)
ISO: International Organization for Standardization
Meaning: A global body that sets engineering, drawing, and manufacturing standards.
IPS: Iron Pipe Size
Meaning: A standard for specifying the diameter of pipes in engineering drawings.
MATL: Material
Meaning: Used in drawings to indicate the type of material required for the component.
CSK: Countersink
Meaning: Indicates a conical recess at the top of a hole to allow flat-head screws to sit flush.
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(5)
(i) The small triangular block on the surface: A simple support or hinged support that allows rotation but prevents vertical movement.
(ii) The plain circle on the surface: A roller support that allows both rotation and horizontal movement but prevents vertical movement.
(iii) The square block on the surface: A fixed (rigid) support that prevents rotation and all translational movement on the member.
(iv) The circle with a diagonal slash on the surface: A rocker support, similar to a roller but shaped to allow slight rocking while still preventing vertical movement.
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(6)
(i) Enhances drawing accuracy and precision.
(ii) Speeds up the drawing and editing process.
(iii) Enables easy modification and duplication of drawings.
(iv) Facilitates 3D modeling and visualization for better design comprehension.
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(7)
(Draw the diagram)
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(8)
(Draw the diagram)
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(9)
(i) A0:
Standard Size: 1189mm × 841mm
(ii) A1;
Standard Size: 841mm × 594mm
(iii) A2:
Standard Size: 594mm × 420mm
(iv) A3:
Standard Size: 420mm × 297mm
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(10)
(Draw the diagram)
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