Deck 3: Computer Graphics and CRT Displays

Question 1

In DUST , is there refresh buffer

A) yes
B) no
C) both
D) none

Answer 1

no

Question 2

The electron beam in DUST is designed to draw directly to

A) phosphor
B) storage mesh
C) glass
D) none

Answer 2

storage mesh

Question 3

The second grid in DUST is called

A) phosphor
B) storage mesh
C) collector
D) none

Answer 3

collector

Question 4

To increase the energy of these slow moving electron and create a bright picture in DUST , the screen is maintained at a

A) low positive potential
B) high negative potential
C) high positive potential
D) none

Question 5

A major disadvantage of DUST in interactive computer graphics is

A) ability to selectively erase part of an image
B) inability to selectively erase part of image from screen
C) inability to produce bright picture
D) none

Question 6

Interactive graphics is useful in

A) training pilots
B) computer aided design
C) process control
D) all of these

Question 7

The term business graphics came into use in late

A) 1950
B) 1960
C) 1970
D) 1990

Question 8

Computer graphics is used in many DTP software as

A) photoshop
B) paint brush
C) both a & b
D) none of these

Question 9

Any CRT based display must be refreshing at least_______ times a second

A) 20
B) 30
C) 40
D) 10

Question 10

The standardization is needed

A) to make application programs more portable
B) to increase their utility
C) to allow them to use in different application environment
D) all of these

Question 11

GKS stands for

A) graphics kernel system
B) graphics kernel stands
C) generic kernel system
D) none of these

Question 12

GKS was developed by the

A) international standards organization
B) national standard organization
C) both a & b
D) none of these

Question 13

The resolution of raster scan display is

A) low
B) high
C) medium
D) none

Question 14

Random scan systems are designed for

A) line drawing application
B) pixel drawing application
C) color drawing application
D) none of these

Question 15

Solid pattern in random scan display is ____ to fill

A) difficult
B) easy
C) not fill
D) none of these

Question 16

Raster scan is _______ expensive than random scan

A) more
B) less
C) both a & b
D) none

Question 17

Two basic technique for producing color display with a CRT are

A) shadow mask and random scan
B) beam penetration method and shadow mask method
C) random scan and raster scan
D) none of above

Question 18

In beam penetration method of color CRT, two layer of phosphor coated are

A) red and blue
B) red and green
C) blue and green
D) none of these

Question 19

In beam penetration method of color CRT, which layer is red and which is green

A) outer is red and inner is green
B) inner is red and outer is green
C) inner is red and inner is green
D) none

Question 20

A shadow mask CRT has _____ phosphor color dots at each pixel position

A) 1
B) 2
C) 3
D) none of these

Question 21

Which color is produced with the green and red dots only

A) blue
B) yellow
C) magenta
D) white

Question 22

Which colors produced with the blue and red dots

A) blue
B) yellow
C) magenta
D) white

Question 23

Cyan color is produced when the blue and green are activated

A) equally
B) unequally
C) both a & b
D) none

Question 24

Which technique of color CRT is used for production of realistic image

A) shadow mask method
B) beam penetration method
C) both a & b
D) none of these