Logical Reasoning Questions and Answers For RRB NTPC Exams

Computer Graphics - Interview Questions and Answers | Basic Computer Knowledge

  • 1. If the eccentricity is less than one then the conic is?
   A.) parabola
   B.) ellipse
   C.) hyperbola
   D.) circle

Answer: Option 'B'

​ellipse

  • 2. Which of the following device has a relative origin?
   A.) Mouse
   B.) Joystick
   C.) Track ball
   D.) None of the above

Answer: Option 'A'

Mouse

  • 3. Fractals deals with curves that are?
   A.) regularly irregular
   B.) irregularly irregular
   C.) regularly regular
   D.) irregularly regular

Answer: Option 'A'

regularly irregular

  • 4. In a clipping algorithm of Cohen & Sutherland using region codes, a line is already clipped if the?
   A.) codes of the end point are same
   B.) logical AND of the end point code is not 0000
   C.) both (a) and (b)
   D.) logical AND of the end point code is 0000

Answer: Option 'C'

​both (a) and (b)

  • 5. The best hidden surface removal algorithm is?
   A.) Depth buffer
   B.) Area subdivision
   C.) Depends on the application
   D.) painters

Answer: Option 'C'

​Depends on the application

  • 6. The subcategories of orthographic projection are?
   A.) isometric, dimetric, trimetric
   B.) cavalier, cabinet
   C.) cavalier, cabinet, isometric
   D.) isometric, cavalier, trimetric

Answer: Option 'A'

isometric, dimetric, trimetric

  • 7. Engineering drawing commonly applies?
   A.) orthographic projection
   B.) oblique projection
   C.) perspective projection
   D.) None of the above

Answer: Option 'A'

orthographic projection

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  • 8. The refresh rate below which a picture flickers is?
   A.) 5
   B.) 10
   C.) 20
   D.) 25

Answer: Option 'D'

25

  • 9. What is ZUI in computer Graphics?
   A.) Logical Enhancement of GUI
   B.) A Widget
   C.) An application that saves memory
   D.) None of the above

Answer: Option 'B'

A Widget

  • 10. Back face removal is an example of ?
   A.) combination of both
   B.) image space method
   C.) object space method
   D.) none of the above

Answer: Option 'C'

object space method

  • 11. In Bresenham's algorithm, while generating a circle , it is easy to generate?
   A.) One octant first and other by successive rotation
   B.) One octant first and other by successive translation
   C.) One octant first and other by successive reflection
   D.) All octants

Answer: Option 'C'

In Bresehnam's algorithm only one octant is needs to be generated ans other octants can be obtained by successive reflection.

  • 12. A line with endpoints codes as 0000 and 0100 is?
   A.) Completely visible
   B.) Completely invisible
   C.) Partially invisible
   D.) Trivially invisible

Answer: Option 'C'

Partially invisible

  • 13. Why a circle drawn on the screen appears to be elliptical?
   A.) Screen has rectangular shape
   B.) It is due to the aspect ratio of monitor
   C.) CRT is completely spherical
   D.) Our eyes are not at the same level on screen

Answer: Option 'B'

​It is due to the aspect ratio of monitor

  • 14. Choose the correct statement?
   A.) The components line of a random scan picture must be refreshed in a particular order
   B.) Random scan method is well suited for displaying shading and color areas
   C.) Raster scan monitors draw a picture one line at a time
   D.) Random scan monitors draw a picture one line at a time

Answer: Option 'D'

Random scan monitors draw a picture one line at a time

  • 15. In bresenhan's algorithm error term is initialized to?
   A.) 0
   B.) 1
   C.) -1
   D.) None of above

Answer: Option 'A'

0

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  • 16. The ISO standard for computer Graphics is?
   A.) Computer graphics standard
   B.) Graphics Standard System
   C.) Graphics Kernel System
   D.) None of above

Answer: Option 'C'

Graphics Kernel System
GKS is the first computer graphics standard.

  • 17. Which of the following technique is used in Midpoint Subdivision algorithm?
   A.) Heap sort
   B.) Bubble sort
   C.) Binary search
   D.) Linear search

Answer: Option 'C'

Binary search

  • 18. Examples of Presentation Graphics is?
   A.) Line Graphs
   B.) Bar Charts
   C.) Both (a) and (b)
   D.) CAD

Answer: Option 'C'

​Both (a) and (b)

  • 19. Which of the following clipping algorithm follows the Divide and Conquer strategy?
   A.) Cohen- Sutherland algorithm
   B.) Cyrus break algorithm
   C.) 4-bit algorithm
   D.) Midpoint algorithm

Answer: Option 'D'

​Midpoint algorithm

  • 20. The technique used to summarize the financial, statistical, mathematical,scientific and economic data is?
   A.) Presentation Graphics
   B.) Image processing
   C.) Computer Art
   D.) None of above

Answer: Option 'A'

Presentation Graphics

  • 21. Computer generated models of physical,financial and economic systems are often used for?
   A.) Quality Control
   B.) Entertainment
   C.) Educational Aid
   D.) None of above

Answer: Option 'C'

​Educational Aid

  • 22. The maximum number of points that can be displayed without overlap on a CRT is refereed to as?
   A.) Attenuation
   B.) Persistence
   C.) Resolution
   D.) None of above

Answer: Option 'C'

Resolution is the number of points per centimeter that can be plotted horizontally and vertically, although it is often simply stated as the total number of points in each direction.

  • 23. Special System designed for some training application are known as?
   A.) Video Display Devices
   B.) Simulators
   C.) GUI
   D.) None of above

Answer: Option 'B'

Simulators

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  • 24. Gray scale is used in?
   A.) Monitor that have no color capability
   B.) Monitor that have color capability
   C.) Random scan display
   D.) None of above

Answer: Option 'A'

Monitor that have no color capability

  • 25. Computer Graphics models are now commonly used for making?
   A.) Television shows
   B.) Music Videos
   C.) Motion pictures
   D.) All of the above

Answer: Option 'D'

All of the above

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