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Isnin, 21 Mac 2016

lukiskan balik gear mengikut no pendaftaran pelajar dan no gear.
ujian 2 simpan dlm autocad 2000.dwg. simpan fail dalam bertajuk no matrik.ujian2
AUTOCAD test 2-JJ5062

1. How many views can you generate from a 3-D drawing?
a.One
b.Three
c.Up to 99
d.As many as you need

2. What is one advantage of 2-D over 3-D CAD drafting
a.You can get more detailed
b.It is easier to learn
c.You can print out 2D drawings
d.2-D is more accurate

3. What are the advantages of 3-D over 2-D CAD drafting?
a.You can generate realistic renderings
b.It is easier to adjust one model instead of many drawings
c.You can create protypes easier
d.All of the above

4. Which axis will you use in 3-D that you didn't use in 2-D?
a.X
b.Y
c.Z
d.None of the above

5. Is isometric drawing true 3-D drawing?
a.Never
b.Only in AutoCAD 2004
c.Always
d.Only after you press "F4"

6. To switch isoplanes, you press:
a."F3"
b."F4"
c."F5"
e."F6"

7. Which command do you use to draw a circle in isometric drafting?
a.The Ellipse command
b.The circle command
c.The Arc command
d.None of the above

8. Does the screen grid look the same in isometric mode as is regular drawing mode?
a.Yes
b.No
c.Only when you press "F5"
d.Isometric mode has no grid

9. In a new drawing, which direction is the Z axis pointing?
a.Up
b.Down
c.Towards you
d.Away from you

10. How long is a line from '0,0,0' to '4,3,2'?
a.2 units
b.3 units
c.4 units
d.Over 5 units

11. Do you have to turn on the Z axis?
a.Yes
b.No
c.Only in old versions of AutoCAD
d.Only if you are drawing a house

12. How can you check if a line is drawn in 3D?
a.You can't
b.Dimension it
c.Press 'F5'
d.Check the line's properties

13. Tiled Viewports are used in...?
a.Model space
b.Paper space (or layouts)
c.In both
d.In neither

14. How many tiled viewports are in a new drawing?
a.One
b.Two
c.Three
d.Four

15. When changing views, should you be concerned about the orientation of the UCS/WCS icon?
a.Never
b.Always
c.No, because I don't need to know which way is up
d.No, it will never change

16. When you are using using multiple viewports, you can change to another by...
a.Pressing 'F1'
b.Using the Zoom command
c.Pressing Control+Z
d.Picking inside the viewport

17. If you copy an object 2 units up in the Z axis, can you see it from the plan view?
a.Yes, it will look different than the original object
b.Yes, if you zoom in close enough
c.No, because it is directly on top of the original object
d.Only if it is a circle

18. Switching to a SW isometric view will...
a.Hide the bottom objects
b.Allow you to see most 3-D objects
c.Turn everything upside down
d.Disable all drawing commands

19. Why should you use multiple layers in 3-D?
a.Because it's more colorful
b.Because more layers make the drawing bigger
c.It's good practice
d.Because if I don't, my drawing will soom be a jumbled mess

20. Wireframes are the most complex form of 3D drawing
a.Yes
b.No
c.They can be
d.Only if you are drawing bridges

21. Is 'line thickness' a true 3-D method of drawing?
a.Yes
b.Yes, but only in AutoCAD LT
c.Yes, but only if you use lots of layers
d.No, it is only a representation

22. Is line thickness the same a polyline width?
a.In most cases, yes
b.Yes, but for 3-D
c.No, they are not related
d.Only on polylines

23. How commands are needed for line thickness?
a.2
b.3
c.5
d.You only change the object's properties

24. Wireframes are just like isometric drawing
a.Yes
b.No
c.They can be
d.Only when you view them from the SW isometrec view


25. What shapes can you create a region from?
a.Arc
b.Line
c.Rectangle
d.Text

26. If a command to create a region fails, what might have been wrong?
a.You selected more than one object
b.The object was not closed
c.There was a gap or space in the shape
d.You tried the command on a polyline

27. The Extrude command creates a...?
a.Solid
b.Wireframe model
c.Region
d.Thick line

28. A 3d Face can be...
a.Based on any shape
b.Based on any 4-sided shape
c.Based on rectangles only
d.Based on lines only

29. Which command will give you a solid object?
a.Revsurf
b.Revolution
c.Revolver
d.Revolve

30. Surftab1 and surftab2 are used in conjunction with which command?
a.Revsurf
b.Revolution
c.Revolver
d.Revolve

31. You can use the Revolve command on...
a.Rectangles
b.Regions
c.Neither 1 nor 2
d.Both 1 and 2

32. To rotate an object in 3-D space, you use the...
a.Rotate command
b.3Drotate command
d.Rotate3D command
e.Both 1 and 2

33. Can you see the materials on your objects without rendering the drawing?
A.Yes
B.No
C.Only in 3-D
D.Yes, if you use the Hide command

34. Does the Materials Library allow you to add materials to your objects?
a.Yes
b.Sometimes
c.No, it only imports them into the drawing
d.Only on solid objects

35. Do you have the option to apply materials to all objects on a particular layer?
a.Only 3-D walls
b.Only if the material is wood
c.Never
d.Always

36. To see rendered materials, you must use which option(s) in the render dialog box
a.Photo Real
b.Photo Raytrace
c.Both
d.Neither

37. Which command is not a Boolean Operation?
a.Union
b.Subtract
c.Join
d.Intersect

38. After using the Union command, the resulting object will have the properties of...
a.The current layer
b.The first object selected
c.The last object selected
d.You will be asked to create a new layer

39. When using the Subtract command, which object do you select first?
a.The object to subtract from
b.The object to subtract
c.You select everything at once
d.The largest one

40. If you Intersect 2 objects what will you be left with?
a.Nothing
b.The volume of both objects combined
c.The volume where the two objects interfere with each other
d.Nothing

41. Does an object created with the Box command have 6 identical sides?
a.Always
b.Never
c.Only if you type the command in upper case
d.Only if you choose to draw it that way

42. How do you define the size of a Sphere?
a.With the Radius
b.With the Diameter
c.By Stretching it
d.You have the option for either Radius or Diameter

43. What shape best describes a Torus?
a.A helix
b.A spiral
c.A donut
d.A black hole

44. How many sides does a Wedge have?
a.4
b.5
c.6
d. on how you draw it

45. Which is the default coordinate system when starting a new drawing?
a.UCS
b.XYZ
c.WCS
d.There isn't one

46. Which is not a valid option for the UCS command?
a.Next
b.3 Point
c.Random
d.Save

47. Which method of creating a UCS does myCADsite.com recommend?
a.View
b.3 Point
c.Origin
d.World

48. In older versions of AutoCAD, a broken pencil symbol means...?
a.That you cannot Save
b.That you need to print the drawing
c.That you cannot draw on that plane
d.Your monitor needs adjusting

49. What is the main advantage to manually mapping materials?
a.So you can see the North position
b.Your materials can look more natural
c.So that you can change the colour of the material
d.There is no advantage

50. Which is not a valid option for mapping Projection?
a.Cylindrical
b.Spherical
c.Resize
d.Solid

51. Can you resize the appearence of the material without adjusting the bitmap size?
a.Yes
b.No
c.Only on cylindrical objects
d.Only on flat objects

52. By default, which direction is the material projected?
a.From the back
b.From the front
c.From the top

d.From the bottom
ujian 2

Isnin, 22 Februari 2016

How to recall Missing command bar








Have any of you tried holding 'Ctrl' and pressing '9' ?
this normally brings up the command bar .

Isnin, 18 Januari 2016

AutoCAD dimension text

The annotation part of a project is one if not the most important part of a CAD project, since printing a Dimensionless drawing will basically make your project unusable.
It is almost always the case to have the dimension style disproportional to the scale of the project you are working on, making it necessary to know how to tweak the Dimension-text scale and often the other parameters like the offset distance of the text from the dimension lines, the scale of the arrowheads and others.

AUTOCAD DIMENSION TEXT

To change the parameters of you Dimensions, You can use the command line: DIMSTYLE.
dimension-autocad
If you type DIMSTYLE and Press ENTER you will have the immediate access to the Dimension Style Manager shown below
dimension-autocad
You can decide to create a completely new Style, or just to Modify the default one. We will focus on few modifications you can make and how each influences the drawing.
Talking about having invisible text on your dimension, On the Text Tab,you can change the height, the text style, the text color and more.
If your text is too big or too small compared to the dimensions of yourdrawings, you might want to tweak its height for it to fit appropriately in your project.
dimension-autocad
Most time, you will also want to change the Offset from dim line, which is how far the dimension will be from the dim line.
dimension-autocad
On the first image above, you can notice how inappropriate the text is, increasing the value of the offset from the dim line allow to push the text upward as shown on the second image.

SYMBOLS AND ARROWS

The Symbols and Arrows tab looks as on the image below
dimension-autocad
You can play with the style of the arrowheads, and their size.
dimension-autocad
This tab gives the control over the size of the arrowheads as well.
dimension-autocad

LINE

This tab could also be a lot helpful.
dimension-autocad
Here you can change the extension lines offset from the origin.
dimension-autocad

PRECISION

This tab allows to set the precision of the value of your dimensions, you can decide to have only one decimal digit,  more or no decimal digit at all. You can also round off your dimensions.
For those who would also like to change the decimal separator, you can do this too.
dimension-autocad
Of course there are way more options than what we have described in this post. feel free to explore them, change them and see how they affect the dimensions on your project.
Some industry have a standard of how much dimensions should weight relatively to the overall scale of the project, you might want to check them out to be sure about how good to set yours.
HOW TO DRAW A SPRING
Here we will be using the SWEEP command, just as the EXTRUDE command we have made use of when we built out first figure in AutoCAD, it helps obtain cylinders from circles and can do more.
The SWEEP command works with few differences similarly to the EXTRUDE command. It helps obtain 3D object from 2D object, just by indicating the path through which the 2D object is going to SWEEP to create the 3D object.
An easy example to demonstrate the possibilities of the SWEEP command is to build a 3D spring in AutoCAD using the SWEEP command and the HELIX command.
Going from the objects in Image 1 to Image 2.


sweep-AutoCAD
sweep-AutoCAD
Let’s use this opportunity to learn how to create an Helix in AutoCAD.
Create an helix in AutoCAD
  1. Type HELIX and press ENTER
  2. Specify the center point of the base
  3. Specify the value of the base radius
  4. Specify the value of the top radius
  5. Specify the height of the helix.
It is to be mentioned that there are many options you can make use of while using the HELIX command. Using this command  you can build an helix based on the number of turns of the helix and/or the height-difference between two subsequent turns.
Here are few things you can build using the HELIX command
sweep-AutoCAD
(a) Spiral
(b) Base radius smaller than top radius (spring)
(c) Base radius bigger than top radius (spring)
(d) uniform spring

 SWEEP IN AUTOCAD

Let’s come back to the main topic of this post, which is the use of the SWEEP command in AutoCAD.
We have had a fun exercise using the 3DROTATE lately, we are right going to use the product of it to build the following 3D object in AutoCAD.
Using images on the left and the SWEEP command, we can build the image on the right.
sweep-AutoCAD

FINAL OBJECT

sweep-AutoCAD
How do you actually use the SWEEP command in AutoCAD.
  1. Type SWEEP and press ENTER
  2. Select object to sweep and press ENTER
  3. Select SWEEP path
As simple as that.
To build the image above

STEP 1

We have 12 segments that will serve as SWEEP path (Use this post to learn how to get this object built)
3drotate-AutoCAD

STEP 2

What we need now, is to draw a circle, duplicate it so to have 12 of them in total.

STEP 3

Sweep 12 times, using each time a circle as the object to sweep and asegment as a sweep path.

3D SPRING

Coming back to our HELICES and let’s SWEEP them with objects having different shapes.
sweep-AutoCAD
(a) Object to SWEEP: circle
(b) Object to SWEEP: Ellipse
(c) Object to SWEEP: Rectangle
(d) Object to SWEEP: Triangle
The resulting image
sweep-AutoCAD
Additional images
sweep-AutoCAD