COMPUTER GRAPHICS

                                            Multiple choice questions
1. Smallest size object that can be displayed on a monitor is called .....................
a) Picture element
b) Point
c)Dot Pitch
d) aspect ratio

Ans: Picture element

2. Each screen point is referred to as .........................
a) Resolution
b)Pixel
c)Persistence
d)Dot Pitch

Ans: Pixel

3. On a monochromatic monitor, the frame buffer is known as ......................
 a) Display file
b) Pixmap
c) Bitmap
d) Refresh buffer

Ans: Bitmap

4. On a color monitor, the refresh buffer is also called .....................
 a)Frame buffer
b)Pixmap
c)Bitmap
d)Display file

Ans: Pixmap

5. .................. refers to pixel spacing.
 a)Pixmap
b)Resolution
c)Pixel depth
d)Persistence

Ans: Resolution

6. The distance from one pixel to the next pixel is called ...........
 a)Resolution
b)Dot Pitch
c)Pixmap
d)ppi

Ans: Resolution

7. The maximum number of points that can be displayed without overlap on a CRT
 a)Aspect Ratio
b)Resolution
c)Brightness
d)Pixel

Ans: Resolution

8. ..................... is the number of points per centimeter that can be plotted horizontally and vertically.
 a)Aspect Ratio
b)Pixel Depth
c)Resolution
d)Dot Pitch

Ans: Resolution

9. ...................... is the ratio of horizontal points to vertical points necessary to produce equal length
lines in both direction.
 a)Dot Pitch
b)Resolution
c)Aspect Ratio
d) Height-Width Ratio

Ans: Aspect Ratio

10. Identify the odd one out from the following
 a)Frame Buffer
b)Pixmap
c)Display program
d)Refresh Buffer

Ans: Pixmap

11. The shortest distance between any two dots of the same color is called ...................
 a)Resolution
b)Dot Pitch
c)Pixel Depth
d)ppi

Ans: Dot Pitch

 12. The standard aspect ratio for PC is .................
 a) 6:5
b) 4:3
c)3:2
d)5:3

Ans: 4:3

13. In CRT, the electron intensity is adjusted using .................
 a) Accelerating anode
b) Control grid
c) Electron gun
d) Focusing anode

Ans: Control grid

14. Brightness of a display is controlled by varying the voltage on the ......................
 a) Focusing anode
b)Connection pins
c)Control grid
d)Power supply

Ans: Control grid

15. Lower persistence phosphorus is used in
a) Animation
b) Simple object
c) Complex object
d) All of these

Ans: Animation

16. Lower persistence phosphorus needs_________ refresh rate
 a) Lower
b)Higher
c)Medium
d)None of these

Ans: Higher

17.. Higher persistence phosphorus needs _________ refresh rate
a) Lower
b)Higher
c)Medium
d)None of these

Ans: Lower

18. Higher persistence phosphorus is used in
a) Animation
b) Simple object
c) High Complex object
d) All of these

Ans: High Complex object

15. Memory area holding the intensity information of an image is called ..............
 a)Refresh buffer
b)Font cache
c)Picture definition
d)Video controller

Ans: Refresh buffer

16. Intensity representation of an image is called ......................
 a)Frame buffer
b)Picture definition
c)Display list
d)Brightness

Ans: Picture definition

17. The purpose of refreshing a CRT is ..........................
a)To avoid flickering
b)To maintain steady picture
 c)To avoid fading of pixels
d)All of the above

Ans: All of the above

18. The fly-back of electron beams from one scanline to next is known as ....................
 a)Vertical Retrace
b)Horizontal Retrace
c)Raster scanning
d)Refreshing

Ans: Horizontal Retrace

19. The return of electron beam to top left corner of the screen after one frame is called ............
 a)Horizontal fly-back
b)Vertical Fly-back
c)Scanning
d)None of the above

Ans: Vertical Fly-back

20. In raster scan display, the frame buffer holds ......................
 a)Line drawing commands
b)Scanning instructions
c)Image Resolution
d) Intensity information

Ans: Intensity information