need help in auto cad question?

Question

q1): can a surface be generated with the aid of the 2D solid tool?
q2) what is the purpose of the hide tool?
q3)when using the Revolved Surface tool, is there any purpose in retaining the axis of revolution required to form the surface?
q4)what is the purpose of the two variables SURFTAB1 and SURFTAB2?
q5) what does initial UCS stand for?
q6)when would you use the UCS prompt 3 point?
q7)what is the difference between a box created using the Surfaces tool Box and that created using the Solids tool Box?
q8)how does one know which view port is active?

Answer 1

Answers:

1) you can create 2D surfaces with the REGION command.
2) the HIDE command is used when you want the display on the screen to eliminate lines that are logically hidden behind other elements. Otherwise the display would show everything.
3) Only if you wish to refer to it at a later stage, ie: use it as an insertion point.
4) SURFTAB 1 sets the tabulation of the mesh on a surface in the M direction (the direction of the X axis on the surface when the surface is viewed in plan). SURFTAB 2 sets the same in the N direction (the direction of the Y axis).
5) UCS stands for User Coordinate System.
6) Use the UCS 3 point alignment when you want the UCS to align to 3 specific points on your drawing. For instance if you have a right angle corner of a room that is aligned differently to your current UCS, you can align the UCS to suit that corner by using these 3 points: the intersection of the 2 walls of the corner, any point along the wall that you wish the X axis to align to, and any point along the wall that you wish the Y axis to align to.
7) You generally cannot perform Boolean operations on a surface. Only solid volumes can be subtracted from, unioned and intersected.
8) The active viewport on a paperspace layout is the one with its boundaries highlighted in bold. Your cursor would also be shown in this viewport.

Look up CAD forums for more answers, such as http://www.cadtutor.net/forum/index.php

Answer 2

1) you can create 2D surfaces with the REGION command.
2) the HIDE command is used when you want the display on the screen to eliminate lines that are logically hidden behind other elements. Otherwise the display would show everything.
3) Only if you wish to refer to it at a later stage, ie: use it as an insertion point.
4) SURFTAB 1 sets the tabulation of the mesh on a surface in the M direction (the direction of the X axis on the surface when the surface is viewed in plan). SURFTAB 2 sets the same in the N direction (the direction of the Y axis).
5) UCS stands for User Coordinate System.
6) Use the UCS 3 point alignment when you want the UCS to align to 3 specific points on your drawing. For instance if you have a right angle corner of a room that is aligned differently to your current UCS, you can align the UCS to suit that corner by using these 3 points: the intersection of the 2 walls of the corner, any point along the wall that you wish the X axis to align to, and any point along the wall that you wish the Y axis to align to.
7) You generally cannot perform Boolean operations on a surface. Only solid volumes can be subtracted from, unioned and intersected.
8) The active viewport on a paperspace layout is the one with its boundaries highlighted in bold. Your cursor would also be shown in this viewport.

Answer 3

1-?
2-The hide tool is used to generate a perspective or 3d view without the overlapping view of lines behind perceived behind others. the surface command lets you define surface views at different planes and angles.
3-?
4-?
5-UCS=User Coordinate System, used to set the orientation of the 3d space. It defines the orientation of 2D objects, and the extrusion direction for "thickness". It also provides the axis of rotation for rotate and the default protection plane for pointing.
6-This tool is handy for trying to get a custom look from a funny angle that you might not be able to calculate manualy
7-The Solid tool allow all the planes and surfaces to be created and manipulated as one until it is exploded. The surface command would require multiple actions.
8-normally the perimeter is highlighted in the active viewport and the cross hair for your pointer will be active their.

Answer 4

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