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This is the smallest diameter of a screw thread:

A. Internal thread diameter

B. Minor diameter

C. Major diameter

D. External thread diameter

Correct Answer : B.


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  1. Perspective drawings are classified according to their number of these features:
  2. This is used to indicate that a surface is to be machined:
  3. An accurate record of changes made to release drawings is tracked via this:
  4. The UCS icon represents the intersection of the ________.
  5. The architectural and construction industries use the United States National CAD standard (NCS) system…
  6. Elevation drawings will include information about ________.
  7. The second line of dimensions out from the plan generally includes ________.
  8. In this type of section, one quarter of the object is removed:
  9. One critical issue drafters need to pay close attention to is the ________.
  10. The building construction industry relies on sets of ________ drawings to construct homes and commercial…
  11. This type of solid has two bases that are parallel equal polygons:
  12. These drawings are given to contractors to perform work or manufacture individual parts:
  13. On a floor plan the dashed line that appears approximately 24 outside the exterior wall represents the…
  14. These plans, made by the steel fabricator, are assembly drawings for the steel structure:
  15. A back or backing weld is a type of:
  16. If designs require changes, they should be documented with:
  17. When setting up a mechanical drawing in Auto-CAD the drafter should set the units to ________.
  18. Understanding the Cartesian coordinate system will help the beginning drafter ________.
  19. The ________ is a standard element of a section view in a technical drawing.
  20. In oblique sketches, the most commonly used angles for receding lines are:
  21. This is the total amount that the feature on the actual part is allowed to vary from what is specified…
  22. In multi-view drawing it is common practice to include three views, the front, the top and the right…
  23. These types of pipes are generally connected with bell and spigot joints or flanged joints:
  24. An Auto-CAD term that refers to a pre-drawn object which is stored in a drawing file and can be inserted…
  25. This type of solid is formed by sweeping a shape along a linear path:
  26. This is a systematic approach that integrates the design and manufacture of products with the goal of…
  27. The text height for room names should be set to ________for a drawing that will be plotted to a scale…
  28. Before starting an isometric drawing in Auto-CAD the drafter needs to ________.
  29. This should show what changes were made, when, and by whom:
  30. In the mechanical design process the first step is to ________.