McqMate
| 401. |
the desired characteristic of line is/are……. |
| A. | it should appear as a straight line |
| B. | it should start and end accurately |
| C. | it should be drawn rapidly |
| D. | all of above |
| Answer» D. all of above | |
| 402. |
the desired characteristic of line is/are……. |
| A. | it should start and end accurately |
| B. | it should be displayed with constant brightness |
| C. | it should be drawn rapidly |
| D. | all of above |
| Answer» D. all of above | |
| 403. |
the horizontal and vertical lines drawn by line drawing algorithm are…… |
| A. | straight |
| B. | curved |
| C. | zig-zag |
| D. | none of these |
| Answer» A. straight | |
| 404. |
A line drawn in the background color is |
| A. | visible |
| B. | invisible |
| C. | visible or invisible |
| D. | none |
| Answer» B. invisible | |
| 405. |
In Bresenham's algorithm, while generating a circle , it is easy to generate? |
| A. | one octant first and other by successive reflection |
| B. | one octant first and other by successive rotation |
| C. | one octant first and other by successive translation |
| D. | all octants |
| Answer» A. one octant first and other by successive reflection | |
| 406. |
Why a circle drawn on the screen appears to be elliptical ? |
| A. | it is due to the aspect ratio of monitor |
| B. | screen has rectangular shape |
| C. | our eyes are not at the same level on screen |
| D. | crt is completely spherical |
| Answer» A. it is due to the aspect ratio of monitor | |
| 407. |
In bresenhan's algorithm error term is initialized to ? |
| A. | 0 |
| B. | 1 |
| C. | -0.5 |
| D. | none of above |
| Answer» A. 0 | |
| 408. |
The anti - aliasing technique which allows shift of 1/4,1/2 and 3/4 of a pixel diameter enabling a closer path of a line is ? |
| A. | pixel phasing |
| B. | filtering |
| C. | intensity compensation |
| D. | sampling technique |
| Answer» A. pixel phasing | |
| 409. |
A technique by which the vertical and /or horizontal scan frequency of video signal can be changed for different purpose and applications is called |
| A. | scan conversion |
| B. | polygon filling |
| C. | two dimensional graphics |
| D. | anti aliasing |
| Answer» A. scan conversion | |
| 410. |
A pixel may be defined as |
| A. | ?? smallest size object |
| B. | larger size object |
| C. | medium size object |
| D. | none of these |
| Answer» A. ?? smallest size object | |
| 411. |
A position in plane known as |
| A. | line |
| B. | point |
| C. | graphics |
| D. | none of these |
| Answer» B. point | |
| 412. |
A line can be represented by |
| A. | one point |
| B. | two points |
| C. | three points |
| D. | four points |
| Answer» B. two points | |
| 413. |
A vector can be defined as |
| A. | intersection b/w two point position |
| B. | difference b/w two point position |
| C. | comparison b/w two point position |
| D. | none of these |
| Answer» B. difference b/w two point position | |
| 414. |
Bresanham circle algorithm uses the approach of |
| A. | midpoint |
| B. | point |
| C. | line |
| D. | none of these |
| Answer» A. midpoint | |
| 415. |
The side effect of scan conversion are |
| A. | aliasing |
| B. | anti aliasing |
| C. | both a & b |
| D. | none of these |
| Answer» A. aliasing | |
| 416. |
The process of reducing aliasing is called |
| A. | resolution |
| B. | anti aliasing |
| C. | sampling |
| D. | none of these |
| Answer» B. anti aliasing | |
| 417. |
Two basic technique for anti aliasing in ray tracing algorithm are |
| A. | pixel sampling and super sampling |
| B. | adaptive sampling and super sampling |
| C. | pixel sampling and super sampling |
| D. | none of these |
| Answer» B. adaptive sampling and super sampling | |
| 418. |
Pixel mask means |
| A. | a string containing only 1;s |
| B. | a string containing only 0’s |
| C. | a string containing 1 and 0 |
| D. | a string containing 0 and 0 |
| Answer» C. a string containing 1 and 0 | |
| 419. |
A heavy line on a video monitor could be displayed as |
| A. | adjacent perpendicular lines |
| B. | adjacent parallel lines |
| C. | both a and b |
| D. | neither a nor b |
| Answer» B. adjacent parallel lines | |
| 420. |
To set the line-width attribute the following command is used. |
| A. | setlinewidthscalefactor (lw) |
| B. | setlinewidth() |
| C. | setlinewidthscalefacto (lw) |
| D. | setlinewidthscalefactor (lw) |
| Answer» D. setlinewidthscalefactor (lw) | |
| 421. |
The parameter to “setLineWidthScaleFactor (lw) “function specifies? |
| A. | standard width |
| B. | relative width of the line |
| C. | thickness of the line |
| D. | all the above |
| Answer» B. relative width of the line | |
| 422. |
Higher persistence phosphorus needs _________ refresh rate |
| A. | lower |
| B. | higher |
| C. | medium |
| D. | none of these |
| Answer» A. lower | |
| 423. |
Higher persistence phosphorus is used in |
| A. | animation |
| B. | simple object |
| C. | higher complex object |
| D. | all of these |
| Answer» C. higher complex object | |
| 424. |
Phosphorus are of various types depending on |
| A. | color |
| B. | persistence |
| C. | both a & b |
| D. | none of these |
| Answer» C. both a & b | |
| 425. |
if one octant of the circle is generated, to complete the generation of full circle, how many reflections are required? |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» D. 8 | |
| 426. |
the best line drawing algorithm among all possible line drawing algorithm is…………. |
| A. | dda |
| B. | algorithm which uses direct equation of line |
| C. | bresenham\s algorithm |
| D. | none of them |
| Answer» C. bresenham\s algorithm | |
| 427. |
if any two point Pi(xi, yi) is considered, then it lies on the line on the line segment y = mx+b if……… |
| A. | yi.mxi + b |
| B. | min (x1, x2) <= xi <= max (x1, x2) |
| C. | min (y1, y2) <= y <= max (y1, y2) |
| D. | all of above |
| Answer» D. all of above | |
| 428. |
if a line segment between (x1, y1) and (x2, y2) is represented in parametric form with a parameter u, then the expression for can be given as…….. |
| A. | x= x1-(x2-x1)u |
| B. | x= x1+(x2-x1)u |
| C. | x= x1+(x1-u)x2 |
| D. | x= x1+(u-x1)x2 |
| Answer» B. x= x1+(x2-x1)u | |
| 429. |
a vector has ………. |
| A. | a single direction |
| B. | two direction |
| C. | a length |
| D. | a and c |
| Answer» D. a and c | |
| 430. |
The problem of aliasing are |
| A. | staircase |
| B. | unequal brightness |
| C. | picket fence problem |
| D. | all of these |
| Answer» D. all of these | |
| 431. |
The technique to minimizing aliasing are |
| A. | increased no of resolution |
| B. | modify pixel intensities |
| C. | super sampling |
| D. | all of these |
| Answer» D. all of these | |
| 432. |
Lower persistence phosphorus is used in |
| A. | animation |
| B. | simple object |
| C. | complex object |
| D. | all of these |
| Answer» A. animation | |
| 433. |
Lower persistence phosphorus needs_________ refresh rate |
| A. | lower |
| B. | higher |
| C. | medium |
| D. | none of these |
| Answer» B. higher | |
| 434. |
the equation of a line, y= mx+b, b is ……. |
| A. | slope of a line the height at which the line crosses the x-axis. |
| B. | slope of a line the height at which the line crosses the y-axis. |
| C. | constant |
| D. | slope of a line |
| Answer» B. slope of a line the height at which the line crosses the y-axis. | |
| 435. |
the basic geometric structures provided by graphics primitive packages are refered to as |
| A. | inputs |
| B. | input primitives |
| C. | outputs |
| D. | output primitives |
| Answer» D. output primitives | |
| 436. |
when a line is represented by a equation, y=mx+b and rx+sy+t=0, m=……. |
| A. | (-r/s) |
| B. | r/s |
| C. | s/r |
| D. | (-s/r) |
| Answer» A. (-r/s) | |
| 437. |
when a line is represented by a equation, y=mx+b and rx+sy+t=0, b=……. |
| A. | (-s/t) |
| B. | (-t/s) |
| C. | s/t |
| D. | t/s |
| Answer» B. (-t/s) | |
| 438. |
if two lines are parallel, they have …….slope. |
| A. | different |
| B. | same |
| C. | zero |
| D. | none of these |
| Answer» B. same | |
| 439. |
if two lines are represented by equations y=m1x+b1 and y=m2x+b2, their point of intersection is given by……… |
| A. | [(m1-m2/b2-b1), (m1-m2)/(b2m1-b1m2)] |
| B. | [(m2-m1/b2-b1), (m2-m1)/(b2m1-b1m2)] |
| C. | [(m1m2/b2b1), (m1m2)/(b2m1-b1m2)] |
| D. | [(b2-b1/m1-m2), (b2m1-b1m2)/(m1-m2)] |
| Answer» D. [(b2-b1/m1-m2), (b2m1-b1m2)/(m1-m2)] | |
| 440. |
when we say a line, it…… |
| A. | extends forward |
| B. | extends backward |
| C. | ends at two points |
| D. | extends forever both forward and backward |
| Answer» D. extends forever both forward and backward | |
| 441. |
In computer graphics, pictures or graphics objects are presented as a collection of discrete picture element called______. |
| A. | dots |
| B. | pixels |
| C. | co-ordinates |
| D. | points |
| Answer» B. pixels | |
| 442. |
. _______is the smallest addressable screen element. |
| A. | dots |
| B. | point |
| C. | pixels |
| D. | spot |
| Answer» C. pixels | |
| 443. |
We can control ____of the pixels which compose the screen. |
| A. | intensity |
| B. | size |
| C. | shape |
| D. | none |
| Answer» A. intensity | |
| 444. |
We can control ____of the pixels which compose the screen. |
| A. | colour |
| B. | size |
| C. | shape |
| D. | none |
| Answer» A. colour | |
| 445. |
Each pixel on the graphics display represents______. |
| A. | a single mathematical point |
| B. | 2 mathematical point |
| C. | 4 mathematical point |
| D. | a region which theoretically can contain infinite points |
| Answer» D. a region which theoretically can contain infinite points | |
| 446. |
. A point (42,38) can be displayed on a screen by a pixel. |
| A. | (4,3) |
| B. | (3,4) |
| C. | (5,4) |
| D. | (4,4) |
| Answer» A. (4,3) | |
| 447. |
The process of determining the appropriate pixel for representing, picture or graphics objects is known as___ |
| A. | scan conversion |
| B. | rasterization |
| C. | scanning |
| D. | graphical representation |
| Answer» B. rasterization | |
| 448. |
The process representing continuous picture or graphics objects as a collection of descrete pixels is called____. |
| A. | scan conversion |
| B. | rasterization |
| C. | scanning |
| D. | graphical representation |
| Answer» A. scan conversion | |
| 449. |
The computer graphics allows____ on pictures before displaying it. |
| A. | rotation |
| B. | translation |
| C. | scaling and projections |
| D. | all of above |
| Answer» D. all of above | |
| 450. |
Graphics devices include_____. |
| A. | input devices |
| B. | output devices |
| C. | a and b |
| D. | none |
| Answer» C. a and b | |
| 451. |
Computer graphics allows_____. |
| A. | user interface |
| B. | plotting of graphics and chart |
| C. | office automation and desktop publishing |
| D. | all of above |
| Answer» D. all of above | |
| 452. |
Computer graphics allows______. |
| A. | copmuter-aided drafting and design |
| B. | simulaion and animation |
| C. | art and commerce |
| D. | all of above |
| Answer» D. all of above | |
| 453. |
Computer graphics allows_____. |
| A. | process control |
| B. | cartography |
| C. | art and commerce |
| D. | all of above |
| Answer» D. all of above | |
| 454. |
The Hardware components of conceptual framework for interactive graphics is/are________. |
| A. | input devices |
| B. | output devices |
| C. | a and b |
| D. | none of these |
| Answer» C. a and b | |
| 455. |
The display devices are_____. |
| A. | input |
| B. | output |
| C. | a and b |
| D. | none of these |
| Answer» B. output | |
| 456. |
CRT stands for____. |
| A. | cathode ray tube |
| B. | colour ray tube |
| C. | cathode radio tube |
| D. | colour radio tube |
| Answer» A. cathode ray tube | |
| 457. |
A CRT is an evacuated _________ tube. |
| A. | plastic |
| B. | glass |
| C. | steel |
| D. | iron |
| Answer» B. glass | |
| 458. |
An____________ gun at the rear of the CRT produces a beam of electrons. |
| A. | electronic |
| B. | electron |
| C. | element |
| D. | emergency |
| Answer» B. electron | |
| 459. |
The deflection system of the CRT consistsof___________deflection plates. |
| A. | vertical |
| B. | horizontal |
| C. | a and b |
| D. | none of these |
| Answer» C. a and b | |
| 460. |
The techique(s) used for producing image on the CRT is/are__________ . |
| A. | vector scan |
| B. | raster scan |
| C. | both a and b |
| D. | none of these |
| Answer» C. both a and b | |
| 461. |
Vector scan technique is also called _________. |
| A. | scalar scan |
| B. | random scan |
| C. | raster scan |
| D. | beam scan |
| Answer» B. random scan | |
| 462. |
In vector scan display, buffer memory used is also called _________. |
| A. | refresh memory |
| B. | refresh buffer |
| C. | buffer display |
| D. | refresh circuit |
| Answer» B. refresh buffer | |
| 463. |
In vector scan display, the phosphor is to be refreshed at least ________ times per second to avoid flicker. |
| A. | 10 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» C. 30 | |
| 464. |
The techique(s) used for producing image on the CRT is/are__________. |
| A. | vector scan |
| B. | raster scan |
| C. | both a and b |
| D. | none of these |
| Answer» C. both a and b | |
| 465. |
In raster scan display,the display image is stored in the form of _________ in the refresh buffer. |
| A. | 1s |
| B. | 0s |
| C. | 1s and 0s |
| D. | none of these |
| Answer» C. 1s and 0s | |
| 466. |
In raster scan CRT, the beam is swept back and forth from _______ across the screen. |
| A. | left to right |
| B. | right to left |
| C. | up to down |
| D. | down to up |
| Answer» A. left to right | |
| 467. |
In raster Scan CRT, when a beam is moved from the left to the right,it s ____ and it is _____ when it is moved from the right to the left. |
| A. | on,off |
| B. | off,on |
| C. | on,on |
| D. | off,off |
| Answer» A. on,off | |
| 468. |
In raster scan display, the screen image repeatedly scanned, this process is called _______. |
| A. | buffering of screen |
| B. | refreshig of screen |
| C. | rendering of screen |
| D. | heghlighting screen |
| Answer» B. refreshig of screen | |
| 469. |
On a black and white system with one bit per pixel , the frame buffer is called a__________. |
| A. | bitmap |
| B. | pixmap |
| C. | bitpixmap |
| D. | pixbitmap |
| Answer» A. bitmap | |
| 470. |
The cost of vector scan display is___________ cost of raster scan dispay. |
| A. | equal to |
| B. | less than |
| C. | more than |
| D. | none of these |
| Answer» C. more than | |
| 471. |
For ____________ display , scan conversion hardware is required. |
| A. | vector scan |
| B. | random scan |
| C. | raster scan |
| D. | none of these |
| Answer» C. raster scan | |
| 472. |
Aspect ratio is the ratio of ________ to prodce equal length lines in both direction on the screen |
| A. | vertical points to horizontal points |
| B. | horizontal points to vertical points |
| C. | left to riht and right to left diagonal points |
| D. | right to left and left to right diagonal points |
| Answer» A. vertical points to horizontal points | |
| 473. |
Display file can be implemented using __________ data structure. |
| A. | array |
| B. | linked list |
| C. | paging |
| D. | all of the above |
| Answer» D. all of the above | |
| 474. |
The process of digitizing a picture definition given in an application program into a set of pixel-intensity Values is called ____________. |
| A. | animation |
| B. | sampling |
| C. | rasterization |
| D. | scan-conversion |
| Answer» D. scan-conversion | |
| 475. |
The size of frame buffer(video memory )depends on_____________. |
| A. | resolution only |
| B. | number of different colors only |
| C. | both (b) and(c) |
| D. | computer byte |
| Answer» C. both (b) and(c) | |
| 476. |
A pixel of black_white image or graphics object takes _________ space in memory. |
| A. | 1 bit |
| B. | 2 bits |
| C. | 1 nibble |
| D. | 1 byte |
| Answer» C. 1 nibble | |
| 477. |
The resolution of an image is __________. |
| A. | number of pixels per unit area |
| B. | number of pixels per unit length inhorizontal |
| C. | number of pixels per unit length in vertical |
| D. | none of these |
| Answer» A. number of pixels per unit area | |
| 478. |
The path the electron beam takes at the end of each refresh cycle is called______. |
| A. | horizontal retrace |
| B. | vertical retrace |
| C. | diagonal retrace |
| D. | left to right retrace |
| Answer» B. vertical retrace | |
| 479. |
The path the electron beam takes when returning to the left side of the CRTscreen is called_____. |
| A. | horizontal retrace |
| B. | vertical retrace |
| C. | diagonal retrace |
| D. | top to bottom retrace |
| Answer» A. horizontal retrace | |
| 480. |
Frame buffer is used to store_____. |
| A. | number if pixels in image |
| B. | intencities of pixels |
| C. | image definition |
| D. | co-ordinate values of image |
| Answer» B. intencities of pixels | |
| 481. |
The clearity of a displayed image depends on the______. |
| A. | resolution |
| B. | floating point precision of system |
| C. | associated software |
| D. | aspect ratio |
| Answer» A. resolution | |
| 482. |
Random scan monitor can also referred to as______. |
| A. | vector displays |
| B. | stroke writing displays |
| C. | calligraphic displays |
| D. | none of the above |
| Answer» A. vector displays | |
| 483. |
Which facility is provided by computer graphics to change the shape colour or other properties of objects begin viewed. |
| A. | motion dynamics |
| B. | update dynamics |
| C. | a & b |
| D. | none of these |
| Answer» B. update dynamics | |
| 484. |
and start point is (20, 20), then slope m =? |
| A. | 1.2 |
| B. | 0.8 |
| C. | -0.4 |
| D. | none of the above |
| Answer» B. 0.8 | |
| 485. |
is a point on a circle that has center at the origin. Which of the following points are also on circle ? |
| A. | (2,-4),(-2,4) |
| B. | (4,-2) |
| C. | (-4,2) |
| D. | all of above |
| Answer» D. all of above | |
| 486. |
and (5,3) is to be drawn, using DDA algorithm. Find the value of x and y increments? |
| A. | x-increments = 1; y-increments =1 |
| B. | x-increments = 0.5; y-increments =1 |
| C. | x-increments = 1; y-increments =0.5 |
| D. | none of above |
| Answer» C. x-increments = 1; y-increments =0.5 | |
| 487. |
A closed polyline is called a _________. |
| A. | polychain |
| B. | polygon |
| C. | polyclosed |
| D. | closed chain |
| Answer» B. polygon | |
| 488. |
__________ is a method for testing a pixel inside of a polygon. |
| A. | even-odd method |
| B. | winding number method |
| C. | a and b |
| D. | none of these |
| Answer» C. a and b | |
| 489. |
The seed fill algorithm for filling polygon is classified as ________ fill algorithm and _______ fill algorithm. |
| A. | flood, boundry |
| B. | even, odd |
| C. | edge, flood |
| D. | boundry, scan |
| Answer» A. flood, boundry | |
| 490. |
The putpixel function draws the pixel specified_______. |
| A. | intensity |
| B. | colour |
| C. | size |
| D. | shape |
| Answer» B. colour | |
| 491. |
Mapping the world co-ordinates into physical device co-ordinates is called__________. |
| A. | translation |
| B. | homogeneous transformation |
| C. | co-ordinate conversion |
| D. | viewing transformation |
| Answer» D. viewing transformation | |
| 492. |
An area on a physical device to which a window is mapped is called a __________. |
| A. | window |
| B. | segment |
| C. | clip |
| D. | viewport |
| Answer» D. viewport | |
| 493. |
The line is said to be interior to the clipping window if ___________point(s) is/ are interior to the window. |
| A. | any line |
| B. | one end |
| C. | both end |
| D. | any two |
| Answer» C. both end | |
| 494. |
The transformation which maps the viewing co-ordinates to normalized device co-ordinte is called _______. |
| A. | viewing transformation |
| B. | translation |
| C. | normalization transformation |
| D. | homogeneous transformation |
| Answer» C. normalization transformation | |
| 495. |
If both end points of a line are exterior to the clipping window,__________. |
| A. | the line is interior to the clipping window |
| B. | the line is not necessarily completely exterior to the clipping window |
| C. | the line is completely exterior to the clipping window |
| D. | none of these |
| Answer» B. the line is not necessarily completely exterior to the clipping window | |
| 496. |
If both end points of a line are completely to the left of clipping window,________. |
| A. | the line is interior to the clipping window |
| B. | the line is not necessarily completely exterior to the clipping window |
| C. | the line is completely exterior to the clipping window |
| D. | none of these |
| Answer» C. the line is completely exterior to the clipping window | |
| 497. |
In Cohen-sutherland subdivision line clipping algorithm, bit 1 in region code is set if _____. |
| A. | end point of line is to the left of the window |
| B. | end point of line is to the right of the window |
| C. | end point of line is to the below of the window |
| D. | end point of line is to the above of the window |
| Answer» A. end point of line is to the left of the window | |
| 498. |
In Cohen-sutherland subdivision line clipping algorithm, bit 3 in region code is set if _____. |
| A. | end point of line is to the left of the window |
| B. | end point of line is to the right of the window |
| C. | end point of line is to the below of the window |
| D. | end point of line is to the above of the window |
| Answer» C. end point of line is to the below of the window | |
| 499. |
The complex graphics operations are_______. |
| A. | selection |
| B. | separation |
| C. | clipping |
| D. | none of these |
| Answer» C. clipping | |
| 500. |
The end point of polygon are called as__________. |
| A. | edges |
| B. | vertices |
| C. | line |
| D. | none of these |
| Answer» B. vertices | |
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