PPSC Computer Science Chapter 11 Computer Graphics Test With Answers

PPSC Computer Science Chapter 11 Computer Graphics Test

Sr. # Questions Answers Choice
1 GKS was developed by the international standards organization National standard organization Both a and b None
2 GKS stand for Graphics kernel system Graphics kernel stnads Generic kernel system None
3 The standardization is needed To make application programs more portable To increase their utility To allow them to use is different application environment All of these
4 Any CRT based display must be refreshing at least __ time a second 20 30 10 40
5 Computer graphics is used in many DTP software as Photoshop Paint brush Both a and b None
6 The origin of computer graphics was developed in. 1950 1960 1970 1990
7 Interactive graphics is useful in Training pilots Computer aided desing Process control All of these
8 A major dis advantage of DUST in interactive computer graphics is. Ability to selectively erase part of an image Inability to selectively erase point of image from screen Inability to produce image picture None
9 In increase the energy of these slow moving electron and create a bright picture in DUST, the screen is maintained at. a. Low positive potential High negative potential High positive potential None
10 The second grid in DUST is called. Phosphor Storage mesh Collector None
11 The electron beam in DUST is designed to draw directly to. Phosphor Storage mesh Glass None
12 In DUST is there refresh buffer. No Yes Both None
13 DUST in rarely used today as part of. Input device Output device Display systems None
14 DUST means Direct view storage tube Domain view storage tube Direct view store tube None
15 The electron beam in a color picture tube is refreshed______ times in a second to make video realistic. 15 times 25 times 35 times 45 times
16 The amount of time the phosphor produce light of shine is controlled by chemical composition of the phosphor This is known as Persistence Resistance Generators None
17 Refresh CRT consist of. Glass wrapper the phosphor viewing surface The electron gun assembly All of above
18 CRT means Common ray tube Cathode ray tube Commercial ray tube None
19 Computer of present time have much higher memory and ______ storage capacity Much smaller Much bigger Gray scale image None
20 Graphics with limited features is known as active graphics Passive graphics Gray scale image None
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