1. Tell me what is the main advantage of chain dimensioning?

Chain dimensioning can be used where the possible accumulation of tolerance does not cause danger to the functional requirement of the part.

2. What is Hyperbola?

It is a curve which is generated by point moving so that the differences of the distances from any point of the curve to two fixed points(foci),is a constant equal to the transverse axis of the hyperbola.

3. Tell me what is a Helix?

It is a curve which is generated by a point moving at uniform rate around and advancing parallel to, or at varying distances from an axis.

4. Do you know what is an Isometric drawing?

This is drawn by using three axis. One axis is drawn vertically and the other two are at an angle of 30 degree (right and left) to the horizontal.

5. Tell me what is meant by assembly drawings?

Drawing which shows how two or parts are assembled and identifies all the pieces which form the assembly is called assembly drawings.

6. Tell me what is Perspective projection?

A perspective drawing is one which more nearly present an object as seen in an actual photograph or as it appears to the eye of the observer.

7. Tell me how are screw threads specified?

It should be specify pitch and dimension with tolerances and also the distance to the end of full(parallel)threads.

8. Tell us how are thin materials shown in sectional drawing?

Thin materials such as sheets, gaskets and electrical sections are shown solid in section and adjoining parts should be separated by a small space.

9. Do you know what is the position of views in Third Angle Projection?

The top view appears above the front view with right side of the object to the right of the front view in third angle projection.

10. Tell me what is an involute?

Involute is a spiral curve made by a point on a perfectly taut string as it unwinds from around a shape such as a circle or polygon.

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