250+ TOP MCQs on Computer-Aided Design and Answers PDF

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Home » Basic Civil Engineering Objective Questions » 250+ TOP MCQs on Computer-Aided Design and Answers

250+ TOP MCQs on ComputerAided Design and Answers

Basic Civil Engineering Multiple Choice Questions on “ComputerAided Design”. 1. The computer-aided design (CAD) hardware doesn’t include. a) Graphic display terminals b) Computer c) Computer programmes d) Keyboard Answer: c Clarification: 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 implement computer graphics. 2. How many types of CAD are there? a) 6 b) 4 c) 2 d) 5 Answer: d Clarification: 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).

3. Modem CAD systems are based on: a) ICG b) GCI c) GIF d) IFG Answer: a Clarification: ICG is interactive computer graphics. It denotes a useroriented system in which computer is used to create, transform and display data in pictorial or symbolic forms. 4. The computer communicates with the user via: a) CPU b) CRT c) Graphics d) Display button Answer: b

Clarification: 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. 5. The process of designing consists of __________ identifiable steps. a) 8 b) 5 c) 4 d) 6 Answer: d

Clarification: The six steps are recognition of need, the definition of a problem, synthesis, analysis & optimization, evaluation and presentation. 6. Implementing CAD improves communications. a) True b) False Answer: a

Clarification: The use of CAD system provides the better understanding of engineering drawings by standardising them. It has fewer errors, proper documentation and greater legibility.

7. The functionality areas of CAD application can be grouped into __________ categories. a) 2 b) 3 c) 4 d) 5 Answer: c Clarification: The four categories are geometric modelling, engineering analysis, design review and evaluation and automated drafting. 8. The colour on CRT screen is obtained by the combination of: a) Red, yellow, blue b) Red, green, blue c) Green, black, yellow d) Red, black, yellow Answer: b Clarification: The three primary colour red, green and blue are combined to produce variety of colours. Colour CRT uses electron beams of these triad colours on phosphor screen to display objects. 9. Who formulated the six ground rules to be considered in designing graphics software? a) Newman and Sproull b) Schaffer G c) Fitzgerald W d) Krouse and Lerro Answer: a Clarification: They gave six ground rules which were simplicity, consistency, completeness, robustness, performance and economy. 10. The input devices in CAD can be divided into: a) 2 b) 5 c) 3 d) 4 Answer: c Clarification: 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 an electronic tracking device) and alphanumeric and other keyboard terminals. 11. The typical ICG system consists of software component. a) True b) False Answer: b

Clarification: It consists of both hardware and software. Hardware includes CPU, workstations and peripheral devices. Software consists of computer programmes required to implement graphics.

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