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Engineering Graphics And Design

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. ___ are used to direct a dimension - note - or symbol to the intended place on a drawing.






2. Baseline dimension is often used for CNC machines that work from a ___ coordinate system






3. ___ is the difference between the maximum material limits of mating parts






4. There are standards for specifying particular types of geometry. for example - circles are typically dimensioned as ___ - and arcs are dimensioned as radii






5. In DG&T - the ___ reference frame is a theoretical system made up of three mutually perpendicular planes established by real features on the object.






6. Unless otherwise specified - all dimensions are applicable at ___ degrees celsius. compensation may be made for measurements made at other temperatures..






7. ___ are beveled or angled edges that typically appear on the ends of shafts or fasteners. They are dimensioned by giving a length from the end of the part and an angle or by specifying two distances






8. Which type of dimensiong offers the best way to eliminate toelrance accumulation?






9. A __ line - along with its arrowheads - shows the direction and extent of a dimension






10. Arcs are dimensioned as radii using the ___ symbol - which is shown preceding the dimension value.






11. ___ refers to a fit where there is space between the two mating parts.






12. A ___ is a cylindrical or spherical surface or a set of two opposed elements or opposed parallel surfaces associated with a size dimension






13. ___ notes typically appear in the lower right hand corner of a drawing and apply to the whole drawing






14. The counterpart of MMC is the ___ - which is the condition in which a feature of size contains the minimum amount of material within the stated limits of size






15. In ___ dimensioning - features are dimensioned relative to one another






16. ___ fits are typically associated with selective assembly






17. All datum simulators must be at least ___ times better in quality than the tolerances specified on the drawings to be considered datum simulators






18. A good analogy of the ___ control is a stack of pennies. this tolerance would control how round each penny is but not the straightness of the whole stack






19. A ___ is typically a planar surface or a feature where the normal vectors point in the same direction






20. When you dimension holes - you string the symbols together in ___






21. A thin - dark - solid lien extending from a point on an object and perpendicular to a dimension line is called an ___






22. Engineering drawings require the use of single stroke ___ lettering






23. Datums are not allowed for v






24. A good rule of thumb to follow when dimensioning is to dimension only visible or ___ lines






25. ___ tolerances are for individual features and are not related to any datums. This group of geometric tolerances includes straightness - flatness - circularity - and cylindricity






26. Datums are always required for ___






27. ___ dimensioning an tolerancing is a 4d mathematical system that allows a designer to describe the form - orientation - and location of features on a part within precise tolerance zones.






28. ___ tolerances are tolerances where the deviation is divided in some way above and below the basic size of the dimension.






29. Most drawings conform to the International System of Units (SI) which is metric and uses the ____ as the standard unit; or they conform to US customary unites with standard unit of the decimal inch






30. When profile tolerances are equally distributed about the perfect geometry of the features - this is referred to as a ___ distribution.






31. ___ is a fit where the two mating parts have intersecting nominal volumes - requiring the deformation of the parts






32. Which type of english fit is inteded where accuracy of location is of prime importance and where parts require rigidity and alignment with no special requirement for bore pressure?






33. The accepted national standard in the united states for dimension and tolerancing is...






34. Each dimension shall have a ___ - except for those dimensions specifically identified as reference - maximum - minimum - or stock






35. when the inside dimensions are more important or more critical than the overall dimension - the overall dimension should be identified as a ___ dimension






36. ___ is a 2D control similar to circulatirty or roundness. the main difference is that it controls a surface relative to a datum axis.






37. The main focus of GD&T is the ___ frame which contains the geometric characteristic symbol - the geometric tolerance - and the relative datums.






38. Which type of metric fit is suitable for parts that can be highly stressed or for shrink fits where the heavy pressure forces required are impractical?






39. A small triangle at the end of a dimension liens and leaders that indicates the direction and extent of a dimension is called a ___






40. In GD&T - the ___ (MMC) modifier allows the size of the zone to change if the size of the hole changes






41. ___ holes are standard machined holes that are used to accept fillister head and hex sockets head screws






42. In GD&T - ___ of a surface specifies a 3D tolerance zone defined by two contoured surfaces. When a datum reference is not specified - the tolerance controls only the shape of the contour. When datums are specified - the tolerance controls the shape o






43. ___ dimensioning usually yields the largest accumulation of tolerance between features.






44. in some ways - symmetry and concentricity are very similar. The main difference is that the former is typically concerned with the position of a center plane relative to an axis or a center plane of a datum feature.






45. For machined parts - the amount of variation - or ___ - might be relatively small






46. All dimensions and tolerances apply in a free state condition. this principle does not apply to ___ parts






47. ___ holes are used for applications with flat head and oval head screws






48. Dimension lines als should be at least ___ millimeters from any view - helping to avoid clutter






49. A numerical value expressed in appropriate units of measure and used to define the size - location - geometric characteristic - - or surface texture of a aprt or part feature is a ___






50. In ___ dimensioning - all of the dimensions in a given direction originate from a base or datum







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