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A typical one-line diagram with annotated power flows. Red boxes represent circuit breakers, grey lines represent three-phase bus and interconnecting conductors, the orange circle represents an electric generator, the green spiral is an inductor, and the three overlapping blue circles represent a double-wound transformer with a tertiary winding.
It should be possible to produce co-ordination drawings or installation drawings without major re-routing of the services. Represent pipework by single line layouts. Represent ductwork by either double or single line layouts as required to ensure that the routes indicated are feasible.
An engineering drawing is a type of technical drawing that is used to convey information about an object. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing.
There should be no whitespace between the numeral and the letter X. (Note on character encoding: Although in typography (including Unicode) the letter X and the multiplication sign (×) are distinct characters with differing glyphs, it is a longstanding tradition in engineering drawing that the letter X is interchangeable with the multi sign ...
The usual line widths are 0.35 mm, 0.5 mm, 0.7 mm and 1.0 mm. Hardness varies usually from HB to 2H. Softer lead gives a better contrast, but harder lead gives a more accurate line. Bad contrast of the lead line in general is problematic when photocopying, but new scanning copy techniques have improved the final result.
Single-line may refer to: Inflatable single-line kite, one of the few modern inventions in the world of kite design; Single-line diagram, a simplified notation for representing a three-phase power system in power engineering; Single-line working, the practice of using one track out of two on a double track railway; Single-track railway
A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length; two common examples are an architect's scale and engineer's scale.In scientific and engineering terminology, a device to measure linear distance and create proportional linear measurements is called a scale.
Central Line is the imaginary line in the middle of each line or line element which is a constitutive part of a graphic character set. If we consider d as the width of the line element and h as the height of the line element, then the two standard ratios for d/h are: 1/14 and 1/10, which are feasible because they result in a minimum number of ...
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