1. Which devices provides positional information to the graphics system ?
a) Input devices
b) Output devices
c) Pointing devices
d) Both a and c
Answer
Answer: d [Reason:] Input devices positional information to the system they often called pointing devices.
2. The number of pixels stored in the frame buffer of a graphics system is known as
a) Resolution
b) Depth
c) Resalution
d) Only a
Answer
Answer: d [Reason:] Number of pixels determines the resolution .
3. In graphical system, the array of pixels in the picture are stored in
a) Memory
b) Frame buffer
c) Processor
d) All of the mentioned
Answer
Answer: a [Reason:] Frame buffer is mainly used to store pixels.
4. Heat supplied to the cathode by directing a current through a coil of wire is called
a) Electron gun
b) Electron beam
c) Filament
d) Anode and cathode
Answer
Answer: c [Reason:] In CRT the filament is responsible for supply of power.
5. The maximum number of points that can be displayed without overlap on a CRT is referred as
a) Picture
b) Resolution
c) Persistence
d) Neither b nor c
Answer
Answer: b [Reason:] none.
6.________ stores the picture information as a charge distribution behind the phosphor-coated screen.
a) Cathode ray tube
b) Direct-view storage tube
c) Flat panel displays
d) 3D viewing device
Answer
Answer: b [Reason:] Instead of refreshing, DVST stores the picture information behind the screen.
7. The devices which converts the electrical energy into light is called
a) Liquid-crystal displays
b) Non-emitters
c) Plasma panels
d) Emitters
Answer
Answer: d [Reason:] Emissive displays are devices that convert electrical energy into light.
8. In which system, the Shadow mask methods are commonly used
a) Raster-scan system
b) Random-scan system
c) Only b
d) Both a and b
Answer
Answer: a [Reason:] Raster-scan system uses shadow-mask method because they produce wide range of colors.
9. The process of digitizing a given picture definition into a set of pixel-intensity for storage in the frame buffer is called
a) Rasterization
b) Encoding
c) Scan conversion
d) True color system
Answer
Answer: c [Reason:] The digitization process is called scan conversion.
10. Which display devices allows us to walk around an object and view it from different sides.
a) Direct view storage tubes
b) Three-dimensional devices
c) Flat panel display devices
d) Plasma panel display devices
Answer
Answer: b [Reason:] 3D display devices allows user to view the object from different sides.
11. In LCD, the refresh rate of the screen is
a) 60 frames/sec
b) 80 frames/sec
c) 30 frames/sec
d) 100 frames/sec
Answer
Answer: a [Reason:] LCD screen is refreshed at 60 frames per second.
12. Random-scan system mainly designed for
a) Realistic shaded screen
b) Fog effect
c) Line-drawing applications
d) Only b
Answer
Answer: c [Reason:] Random-scan system mainly designed for Line-drawing applications.
13. The primary output device in a graphics system is___
a) Scanner
b) Video monitor
c) Neither a nor b
d) Printer
Answer
Answer: b [Reason:] The video monitor is the commonly used output device.
14. On a black and white system with one bit per pixel, the frame buffer is commonly called as
a) Pix map
b) Multi map
c) Bitmap
d) All of the mentioned
Answer
Answer: c [Reason:] Bit map frame buffer is always 1 bit per pixel.
15. Aspect ratio means
a) Number of pixels
b) Ratio of vertical points to horizontal points
c) Ratio of horizontal points to vertical points
d) Both b and c
Answer
Answer: d [Reason:] none.
