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What is chain dimensioning?

It show dimension of given dig. Ex. length meter etc. > chain dimensioning as opposed to datum dimensioning. chain dimensioning: 4 holes in line on a drawing, first hole position dimensioned from the edge, remainder dimensioned from the centre of the previous hole. datum dimensioning: all holes dimensioned from the edge. the cumulative tolerance build up on the chain dimensioning allows for greater overall tolerance build up.


Why is it necessary for engineers to make sure that the drawings are fully dimensioned?

It is essential for engineers to ensure that drawings are fully dimensioned to provide clear and precise specifications for manufacturing and construction. Fully dimensioned drawings eliminate ambiguity, reduce the risk of errors, and ensure that all components fit together correctly. This clarity is crucial for effective communication among team members and stakeholders, ultimately leading to successful project execution and adherence to safety and quality standards.


Where sf6 gas is filling in sf6 braker?

Usually in a sealed tank, the switch contacts are in the tank too. The SF6 gas quenches any arcs that form when the switch contacts are opened.


What are the two major differences between a mechanical switch and a transistor?

speedsizeswitch has moving parts, transistor has no moving partsswitch contacts wear out from friction and/or electrical arcs, transistors don'tetc.


What are the different types of geometric constraints that are applied to sketches and what are their functions?

Perpendicular is a constraint that causes lines or axes of curves to meet at right angles.Parallel causes two or more lines or ellipse axes to be equidistant from each other.Tangent is used to cause two arcs or a line and an arc to intersect at a single point perpendicular to the arc's radius.Coincident fixes two points together, or fixes a point to a curve.Concentric causes two or more arcs, circles, or ellipses to share the same center point.Colinear causes two lines or ellipse axes to lie along the same line.Horizontal causes lines, ellipse axes, or pairs of points to lie parallel to the X axis of the sketch coordinate system.Vertical causes lines, ellipse axes, or pairs of points to lie parallel to the y axis of the sketch coordinate system.Equal forces line segments to be the same length and arcs or circles to have the same radius.Fix constrains points or curves to a specific point on the sketch coordinate system.Symmetry causes selected lines or curves to become symmetrically constrained about a selected line.(http://chongher.weebly.com/pltw-blog.html)