CAD CAM Objective Questions & Multiple drawing environment

CAD CAM Objective Questions

1. By
P.Srihari,
Asst. Professor, Tekkali.

2. Which of the following is not a cursor control input device?
(a) Mouse (b) Joystick (c) MICR(d) Keyboard
The CPU consists of
(a) ALU and CU(b) the CU only (c) the ALU only (d)
programs only
A RAM is also known as
(a) Random Access Memory (b) main memory (c) working
memory (d) All of the above.
What can a floppy disk be used as ?
(a) Input only (b) Output only (c) input and output
(d) None of the above

3. Another name for permanent storage is
(a) ROM(b) floppy disk (c) secondary storage (d) hard
disk
CAD is used by
(a) typist (b) doctors (c) lawyers (d) engineers
Computer Graphics means
a) pictures b) graphs c) charts d) all of the above.
A printer that is extremely fast in printing is the
(a) laser printer (b) ink-jet printer (c) dot-matrix
printer (d) plotter
In AutoCAD what does ‘@’ symbol mean?
a) default b) abort c) execute d) the last absolute co-
ordinate

4. Use of computer systems to plan, manage, and control
manufacturing operations
a) CAD b) CAE c) CAM d) CIM
Use of computer systems to analyze CAD geometry
a) CAPP b) CAEc) CAD d) CAM
Which one of the following; allows the designer to create and
manipulate a shape interactively and store it
a) CNC b) CADc) CIM d) CAM
Layer by layer fabrication of three-dimensional physical models
from CAD
a) Geometric Modelingb) Rapid Prototyping c) Solid
Modeling d)None
The CAD database lies in the
a) Primary Storage (Computer’s Memory) b) Secondary Storage
c) Both a & b d) None

5. All the projecting lines (projectors) are
perpendicular/orthogonal to the projecting plane in
which projection?
a)Isometric b) Orthographic c) Oblique d) None
A transformation from one three space in to another
three space is
a)Translation b) Scaling c) Perspective
Transformation d) None
Which of the following is not an axonometric
projection?
a) Dimetricb) Isometric c) Trimetric d) Perspective
Which of the following geometric model is most
ambiguous?
a) Surface model b) Wireframe Model c) Solid Model
d) None is ambiguous

6. Which of the following geometric model requires less
computing time?
a) Solid Model b) Wireframe Model c) Synthetic
Surfaces d) Analytic Surfaces
The Linear surface which interpolates linearly between
two boundary curves is called
a) Surface of Revolution b) Coons Patch c) Ruled
Surface d) Plane Surface
Which is known as perimeter modeling
a) Surface Modeling b) Wireframe Modeling
c) Building Block Modeling d) Boundary Rep
The feature used to create a Basic Solid is
a) Primitiveb) Extrude c) Customization d) Sketch

8. Key Terms

9. Command Codes
CO-Copy
C-Circle
L-Line
MI-Mirror
F-Fillet
CHA-Chamfer

10. Function Keys
F1 HELP
F2 FLIPSCREEN
F3 OSNAP
F4 TABLET
F5 ISOPLANE
F6 COORDINATE DISPLAY

11. Function Keys Cont.
F7GRID
F8ORTHO
F9SNAP
F10POLAR
F11OTRACK

12. Special Function Keys
ESC-Cancels the current
command, menu, or dialog
box.
ENTER-Ends a command;
or will repeat the previous
command if the command
line is blank
SPACE BAR-Same as the
end key except when
entering text.

13. Coordinate Display (F6)
In the ABSOLUTE mode: Displays the location of
the crosshairs/ cursor in reference to the origin.
The first number represents the horizontal (x axis)
and the second number represents the vertical (y
axis).
In RELATIVE POLAR mode: displays the distance
and angle of the cursor from the last point entered.

14. SNAP (F9)
Increment Snap controls the movement of the cursor.
If it is off the cursor will move smoothly. If it is ON,
the cursor will jump in an incremental movement. The
increment spacing can be changed, at any time using
TOOLS/DRAFTING SETTINGS. The default spacing is
.250

15. GRID (F7)
The grid is merely a visual “drawing aid”. The default
spacing is 1 unit. You may change the grid spacing at
any time using: TOOLS/DRAFTING SETTINGS.

16. ORTHO (F8)
When ORTHO is ON, the cursor movement is
restricted to horizontal or vertical. When ORTHO is
OFF, the cursor is free to move.

17. POLAR (F10)
POLAR TRACKING creates “alignment paths” at
specified angles.

18. OSNAP (F3)
RUNNING OBJECT SNAP-specific object snaps can be
set to stay active until you turn them off.

19. OTRACK (F11)
OBJECT SNAP TRACKING creates “alignment paths”
at precise positions using object snap locations.

20. Drawing Area
The large area in the center of the screen.
This is where you draw.
The size can be changed at any time.

21. CrossHairs/ Cursor
The movement is controlled by the movement of the
pointing device (mouse).
Use to locate points, make selections and draw objects.

22. Command Line
The three lines at the bottom of the screen.
This is where you enter commands and AutoCAD will
prompt you to input information.
The number of lines visible can be changed.

23. Status Bar
Displays your content settings.
The settings can be turned on/off by clicking on the
word (SNAP, GRID, ORTHO, etc) or by pressing the
function keys associated with each.

24. LWT
Lineweight displays the width assigned to each object.

25. MODEL
Switches your drawing between paper space and
model space.

26. BPOLY
Common types to bring up the boundary box.
Also used to make line segments for 1 uniform shape.

27. LIST
Used to get database info for an object.
Layer
Space
Center Point
Radius
Start Angle
End Angle
Length of line or arc

28. Multiple Drawing Environments: MDE
You can open as many files as you have memory for.
Like other Windows documents, you can work in any
drawing by minimizing or maximizing the screen.
You can only copy, match properties and move in
MDE.

29. Lineweights
Set by layers
LWT-turns them on or off
Filenames
Don’t use spaces if possible.