Discuss the capabilities of CAD systems.
What will be an ideal response?
CAD systems utilize all the principles and applications of drafting techniques, engineering data, and information generally found on drawings produced by conventional methods. CAD can make every type of drawing that can be done manually.
CAD scaled drawings may be enlarged or reduced and automatically dimensioned to provide necessary manufacturing information. Cross-hatching for sectional views is produced by selecting the correct cross-hatch lines for the part material, choosing the desired angle for the lines, and defining the area to be cross-hatched. Single, multiple, and/or auxiliary views may be drawn using CAD. A completed drawing may be reproduced in black and white or color, stored in memory, recalled at any time, and edited for changes, corrections, or additions.
Details are generated by zoning in on a feature and zoning out to view the drawing in full. Notes and straight, slant, and architectural style letters and numbers may be selected and placed at desired locations on drawings.
CAD has several claimed advantages over manual drafting. CAD is said to be more accurate, faster in many instances, neater, and more consistent in quality. Some of the most important advantages are in the areas of immediate retrieval, revision, and storage of drawings.
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Answer the following statement(s) true (T) or false (F)
1. The phrase “wound rotor” describes the construction of the rotor. 2. The induced current remains constant in the wound rotor motor. 3. There are two types of manual controllers, starters and regulators. 4. A normally closed micro-limit switch is used to sense when the manual controller is in a position such that all resistance is connected in the rotor circuit. 5. Drum controllers may be used in place of faceplate starters.
A feature array takes one feature, called the ____ feature, and places copies of it on the model at a specified spacing.
A. primary B. blind C. master D. generative
The Pullman strike created the first instance of
A. management recognition of the right of workers to organize and strike. B. government use of federal troops to break a labor strike. C. violence during a labor strike. D. a united front between urban workers and agrarian Populists. E. government use of a federal court injunction to break a strike.
A(n) _________ is a familiar type of transient voltage surge suppressor that is usually bought and installed by the homeowner rather than the electrician.
Fill in the blank(s) with the appropriate word(s).