Free Computer-Aided Design Applications Questions and Answers
The input devices in CAD can be divided into:
The input devices can be divided into three general categories. These are cursor control devices ( direct keys on keyboard, joysticks, tracker ball, etc.), digitizers (large smooth board with electronic tracking device) and alphanumeric and other keyboard terminals.
Who formulated the six ground rules to be considered in designing graphics software?
They gave six ground rules which were simplicity, consistency, completeness, robustness, performance and economy.
How many types of CAD are there?
The five types are 2D CAD (flat drawings of product), 2.5D CAD (Prismatic models), 3D CAD (3D objects), 3D wireframe and surface modelling (skeleton like inner structure) and solid modelling (solid geometry).
Implementing CAD improves communications.
The us of CAD system provides the better understanding of engineering drawings by standardizing them. It has fewer errors, proper documentation and greater legibility.
The computer communicates with the user via:
Cathode Ray Tube (CRT) screen gives the user the design created as an image. It is done by entering commands to get specific functions performed.
Modem CAD systems are based on?
ICG is interactive computer graphics. It denotes a user-oriented system in which computer is used to create, transform and display data in pictorial or symbolic forms.
The color on CRT screen is obtained by the combination of?
The three primary colour red, green and blue are combined to produce variety of colours. Color CRT uses electron beams of these triad colours on phospor screen to display objects.
The functionality areas of CAD application can be grouped into ______________ categories.
The four categories are geometric modelling, engineering analysis, design review and evaluation and automated drafting.
The typical ICG system consists of software component:
It consists of both hardware and software. Hardware includes CPU, workstations and peripheral devices. Software consists of computer programmes required to implement graphics.
The process o designing consists of __________ identifiable steps.
The six steps are recognition of need, the definition of a problem, synthesis, analysis & optimization, evaluation and presentation.
The Computer-aided design (CAD) hardware doesn't include?
CAD has both hardware and software components. The hardware components are Graphic display terminals, Computer and Keyboard. The software components include all computer programmes that implements computer graphics.