PPSC Computer Science Full Book test With Answers

PPSC Computer Science Full Book test

Sr. # Questions Answers Choice
1 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
2 Any CRT based display must be refreshing at least __ time a second 20 30 10 40
3 Computer graphics is used in many DTP software as Photoshop Paint brush Both a and b None
4 The origin of computer graphics was developed in. 1950 1960 1970 1990
5 Interactive graphics is useful in Training pilots Computer aided desing Process control All of these
6 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
7 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
8 The second grid in DUST is called. Phosphor Storage mesh Collector None
9 The electron beam in DUST is designed to draw directly to. Phosphor Storage mesh Glass None
10 In DUST is there refresh buffer. No Yes Both None
11 DUST in rarely used today as part of. Input device Output device Display systems None
12 DUST means Direct view storage tube Domain view storage tube Direct view store tube None
13 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
14 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
15 Refresh CRT consist of. Glass wrapper the phosphor viewing surface The electron gun assembly All of above
16 CRT means Common ray tube Cathode ray tube Commercial ray tube None
17 Computer of present time have much higher memory and ______ storage capacity Much smaller Much bigger Gray scale image None
18 Graphics with limited features is known as active graphics Passive graphics Gray scale image None
19 Grey scale image have a maximum color depth of 8 bit 16 bit 64 bit None
20 CMYK true color model has _______ color depth 32 bit 24 bit 64 bit None
21 RGB true color model has_______________ color depth 24 bit 32 bit 64 bit None
22 Each bit represent One color Two color Three color None
23 Color depth can be defined by ________ which can be displayed on a display unit. Bits per pixel Bytes per pixel Maga byte per pixel None
24 The RGB model display a much _________ percentage of the visible band as compared to CMYK Lasser Larger Medium None
25 The intersection of three primary RGB color produces. White color Black color Magenta color Blue color
26 CMYK model are used for Computer display Printing Painting None
27 RGB model are used for Computer display Printing Painting None
28 Two dimensional color model are RGB and CMKY RBG and CYMK RGB and CMYK None
29 Color apparent is subtractive modes are the resultof. Amount of reflected light Transmission of light Flow of light None
30 Color apparent in additive mode are the result of. Reflected light Transmission of light Flow of light None
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