Autocad or CAD Interview/Viva questions (2020) for interviews, PSC, engineering exams
Basic Autocad or CAD interview questions
In this article, we are going to discuss about the Autocad or cad interview questions.
Advanced Autocad interview or viva questions.
1. What is meant by AutoCAD?
AutoCAD is one of the cad system software introduced in dec1982 by Autodesk ltd in Sausallia, California of USA. It has hit the technical world like shock wave revolutionizing the manner of drawing preparation.
2. What is the diff between CAD & CADD?
CAD-computer aided design, CADD-computer aided design and drafting
3. What are the applications of CAD?
Design of machine elements, CNC machine tools, robotics etc Panel design and circuit layout Mapping, building plans, contour plotting and structural drawing Interior design and modeling
4. Define absolute co-ordinates?
Values locating a point in space that describe its displacement from origin (0,0,0)point of the drawing.
5. Define polar coordinates.
Values are locating a point in space that describes its location relative to the last point picked as defined by an angle and s distance.
6. Define angular dimension?
A dimension that measures the angle between two lines or the angle inscribed by an arc segment
7. Define aligned dimension?
A linear dimension measuring the distance between two points. The dimension line for an aligned dimension is parallel to a line between points.
8. What is By layer?
A value that can be assigned to colours and line types so that objects receive their colour and line type properties according to the layer they are on.
9. What is command line?
A text window at the bottom of the screen that’s displays command: prompt. This is where you see what you are entering through the keyboard. Also called the command window. 10. What is command: prompt: A prompt at the command line, when no commands are currently running
10. Define polar co-ordinates.
Values are locating a point in space that describe its location relative to the last point picked as defined by an angle and its distance.
11. What is cross hair cursor?
A form of the cursor that consists of a horizontal line and a vertical line intersecting at their midpoints, resembling the crosshair in a sighting device.
12. Define dimension variables?
A group of settings and values that control the appreance of dimensions.
13. Define current UCS?
The user co-ordinate system that is active in a drawing. It determines the positive X,Y and Z
14. What is .dwg?
The file extension and format for the standard AutoCAD drawing.
15. Define graphics window?
The appearance of your screen when AutoCAD is running. It consists of the drawing area and surrounding toolbars, menu bars the command window and the status bar.
16. Define line type?
The style of appearance of a line. AutoCAD styles include continues, dashed, dash dot. And so on.
17. What is a hatch patterns?
A pattern of lines dots and other shapes that fills in a closed area.
18. Define MIRROR?
A command that makes a copy of selected objects and flips the copy around a specified line to produce a reciprocal image of those objects.
19. What is an ortho mode?
An on/off setting that, when on forces lines to be drawn and objects to be moved in a horizontal or vertical direction only.
20. What are the advantages of CAD?
Greater productivity of the designer, improvement of design quality Easier design, calculation and analysis, quicker rate producing drawings, more accuracy of drawings, colour graphics is possible.
21. What is an object snap mode?
Any of a set of tools precisely picking strategic points on an object, including end point, midpoint, center, and so on. It is casually called osnap.
22. Define block?
The description of an association of AutoCAD objects that is stored with the drawing file and include a name, an insertion point, and a listening of objects in the association.
23. Define relative co-ordinates?
Values are locating a point in space that describes its displacement from last point picked in the drawing rather than from the origin.
24. What in ‘Anti-aliasing’?
Anti-aliasing is a advanced process for better illustration with multiple color gradations during drawing a line.
25. Differentiate clockwise and counter clockwise rotation matrix.
The direction of vector rotation is counterclockwise if θ is positive and clockwise if θ is negative
26. Write down the eccentricity value for ellipse, parabola and hyperbola.
The value of eccentricity less than one is ellipses those with eccentricity equal to one are parabolas, and those with eccentricity greater than one is hyperbolas.
27. Define Conic section.
A conic section is a curve created as the intersection of a cone with a plane. In analytic geometry, a conic may be described as a plane algebraic curve of degree two, and as a quadric of dimension two.
28. Define ‘focus’ of a curve.
In geometry, the focus is pair of special points with reference to which any of a variety of curves is constructed.
29. Write a short note ‘Hermite curve’.
A Hermite curve is a spline where every piece is a third degree polynomial defined in Hermite form: that is, by its values and initial derivatives at the end points of the equivalent domain interval.
These are the commonly asked autocad interview questions or CAD viva questions.