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Graphics Hardware and Display devices Input Devices
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1. Which devices provides positional information to the graphics system ?
Input devices
Output devices
Pointing devices
Both a and c
2. The number of pixels stored in the frame buffer of a graphics system is known as
Resolution
Depth
Resalution
Only a
3. In graphical system the array of pixels in the picture are stored in
Memory
Frame buffer
Processor
All of the mentioned
4. Heat supplied to the cathode by directing a current through a coil of wire is called
Electron gun
Electron beam
Filament
Anode and cathode
5. The maximum number of points that can be displayed without overlap on a CRT is referred as
Picture
Resolution
Persistence
Neither b nor c
6. ________ stores the picture information as a charge distribution behind the phosphor-coated screen.
Cathode ray tube
Direct-view storage tube
Flat panel displays
3D viewing device
7. The devices which converts the electrical energy into light is called
Liquid-crystal displays
Non-emitters
Plasma panels
Emitters
8. In which system the Shadow mask methods are commonly used
Raster-scan system
Random-scan system
Only b
Both a and b
9. The process of digitizing a given picture definition into a set of pixel-intensity for storage in the frame buffer is called
Rasterization
Encoding
Scan conversion
True color system
10. Which display devices allows us to walk around an object and view it from different sides.
Direct view storage tubes
Three-dimensional devices
Flat panel display devices
Plasma panel display devices
11. In LCD the refresh rate of the screen is
60 frames/sec
80 frames/sec
30 frames/sec
100 frames/sec
12. Random-scan system mainly designed for
Realistic shaded screen
Fog effect
Line-drawing applications
Only b
13. The primary output device in a graphics system is_________
Scanner
Video monitor
Neither a nor b
Printer
14. On a black and white system with one bit per pixel the frame buffer is commonly called as
Pix map
Multi map
Bitmap
All of the mentioned
15. Aspect ratio means
Number of pixels
Ratio of vertical points to horizontal points
Ratio of horizontal points to vertical points
16. The most commonly used input device is
Mouse
Keyboard
Scanner
Printer
17. Which keys allows user to enter frequently used operations in a single key stroke?
Function keys
Cursor control keys
Trackball
Control keys
18. ________ are used to measure dial rotations.
Potentiometers
Volta meter
Parameter
Only a
19. The device which is used to position the screen cursor is
Mouse
Joystick
Data glove
Both a and c
20. ______ is used for detecting mouse motion.
Optical sensor
Rollers on the bottom of mouse
Both a and b
Sensor
21. Trackball is
Two-dimensional positioning device
Three- dimensional positioning device
Pointing device
None of the mentioned
22. Space ball provide________ degree of freedom.
10 degree
6 degree
8 degree
12 degree
23. Which is the ball that can be rotated with the fingers or palm of the hand?
Space ball
Trackball
Only a
oth b and c
24. _______ is used for 3D positioning and modeling animation and other application.
Trackball
Spac ball
All of the mentioned
None of the mentioned
25. Potentiometers mounted at the base of the joystick measures
The amount of movement
The direction
Position
Resolution
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