Discuss precision sheet metal parts production.
What will be an ideal response?
The increasing number of applications of thingage metals for parts within instruments, gages, electronic, and other precision equipment requires layouts and parts that are produced to precise machine shop standards. Such sheet metal parts are often blanked, perforated, formed, and trimmed using punches and dies.
In other instances, parts may be manually or computer-programmed and produced on numerical control machines. Ordinate drawings are commonly used for producing precision sheet metal parts. Ordinate dimensions are referenced to zero datums to provide position and size dimensions for production of the part of NC or CNC equipment.
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Draw a simple schematic for a SPST switch that turns on a light and engages the coil of a relay using the component symbols from the Schematic & Wiring Diagram section of the chapter.
What will be an ideal response?
Which statements are true regarding daylighting? Select all that apply.
A) Daylighting has better energy performance in temperate or cold climates. B) Combined with electric light, daylight may alter the rendering of colors in a building. C) Using solar tubes can eliminate the glare and thermal discomfort of direct sunlight. D) The use of light shelves will enhance the penetration of daylight into spaces.
Disposable cylinders of HFC-407C are colored _____.
a. orange with a gray top b. yellow c. blue-gray d. brown
A ____ can be used when a view has features that cannot be dimensioned clearly.
A. contour visualization B. view enlargement C. partial view D. pictorial view E. none of the above