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Questions and Answers
Which of the following letters are classified as straight-line letters?
What is the approximate width of a visible line in millimeters?
Which curved-line letters are based on a true circle?
What type of line is approximately 0.35mm thick?
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Which of the following is NOT a curved-line letter?
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Study Notes
Straight-Line Letters
- IL
- TFEHVA
- WMNK
- XYZ
Curved-Line Letters
- O
- Q
- C
- G
- JUD
- PRB
Curved-Line Letters and Numerals
- QQ, C, G, and O are based on a true circle
- The lower portion of the J and U is elliptical
- The 8 is composed of two ellipses
- The 3, S, and 2 are based on the 8
- The 0, 6, and 9 are elliptical
Type of Lines
- Visible Line: THICK, approximately 0.7mm wide
- Hidden Line: THIN, approximately 0.5mm wide
- Section Line (Hatching): THIN, approximately 0.35mm wide
- Centre Line: THIN, 20-40mm
- Dimensionline Extension Line Leader: THICK
- Cutting-Plane or Viewing-Plane Lines: THICK
- Short-break line: THIN, freehand
- Long-break line: THIN, 20-40mm
- Phantom line: THIN
- Chain line: THICK, 10-20mm
- Stitch line: THIN
Drawing Exercise
- Straight lines and circles are drawn according to patterns using drawing instruments
- Location and dimensions of figures are provided
- Drawings are done with pencils
- Students focus on connections and crossing of lines with precision
- Lines must adhere to engineering drawing principles
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Description
This quiz focuses on the various types of lines and letters used in technical drawing, including straight and curved line letters. Participants will learn about the characteristics of different lines such as visible, hidden, and dimension lines. Understanding these concepts is essential for accurately representing shapes and figures in technical illustrations.
