McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electronics and Communication Engineering .
| 351. |
view plane normal vector is perpendicular to---- |
| A. | viewing |
| B. | projection |
| C. | workstation |
| D. | 3d |
| Answer» C. workstation | |
| 352. |
2 basic ways of projecting objects onto viewplane are --- and--- |
| A. | normal |
| B. | plane |
| C. | view |
| D. | reference |
| Answer» C. view | |
| 353. |
A ---- projection preserves relative proportion of object but does not produce the realistic view |
| A. | serial parallel |
| B. | serial, perspective |
| C. | parallel, perspective |
| D. | none of these |
| Answer» C. parallel, perspective | |
| 354. |
A---- projection produces realistic view but does not preserve relative proportion |
| A. | serial |
| B. | parallel |
| C. | perspective |
| D. | any |
| Answer» B. parallel | |
| 355. |
In perspective projection line of projection converge at a single point called ----- |
| A. | center of projection |
| B. | parallel |
| C. | perspective |
| D. | any |
| Answer» C. perspective | |
| 356. |
In perspective projection eye of the viewer is placed at the _. |
| A. | scaling |
| B. | rotation |
| C. | translation |
| D. | all of these |
| Answer» C. translation | |
| 357. |
In _ the projection, lines are perpendicular to the projection plane. |
| A. | left of the projection |
| B. | right of the projection |
| C. | top of the projection |
| D. | center of the projection |
| Answer» D. center of the projection | |
| 358. |
clockwise rotaton of 2D object is similar to clockwise rotation of _ in 3D |
| A. | orthographic projection |
| B. | oblique projection |
| C. | perspective projection |
| D. | cavalier projection |
| Answer» A. orthographic projection | |
| 359. |
In _ transformation,we get Z(new)=Z(old). |
| A. | about xaxis |
| B. | about y axis |
| C. | about zaxis |
| D. | none of these |
| Answer» C. about zaxis | |
| 360. |
In case of 3 clipping _ is the additional thing as compared to 2d clipping. |
| A. | true |
| B. | false |
| C. | not allways |
| D. | none of these |
| Answer» B. false | |
| 361. |
if two points used to specify a line are (x1, y1) and (x2, y2), then the equation of line is given as……….. |
| A. | x-x1/y-y1= y2-y1/x2-x1 |
| B. | y-y1/x-x1=y2-y1/x2-x1 |
| C. | a or b |
| D. | none of these |
| Answer» B. y-y1/x-x1=y2-y1/x2-x1 | |
| 362. |
the equation of a line in slope intercept form is given as…… |
| A. | x = my + b |
| B. | b= mx+y |
| C. | y=mx+b |
| D. | y+b=mx |
| Answer» C. y=mx+b | |
| 363. |
……… is the fundamental element of the picture representation. |
| A. | line segments |
| B. | polygon |
| C. | point |
| D. | circles |
| Answer» C. point | |
| 364. |
minimum…….. Points are required to represent a line |
| A. | two |
| B. | three |
| C. | four |
| D. | none of these |
| Answer» A. two | |
| 365. |
………. and ……... are the basic output primitives. |
| A. | points, line segments |
| B. | points, circle |
| C. | line segments, curves |
| D. | circles, polygons |
| Answer» A. points, line segments | |
| 366. |
points P1(3.2, 7.8) and P2(3.7, 7.1) are both represented by pixel…….. |
| A. | (3,8) |
| B. | (4,7) |
| C. | (3,7) |
| D. | (4,8) |
| Answer» C. (3,7) | |
| 367. |
pixel phasing is an anti-aliasing technique based on……… |
| A. | hardware |
| B. | software |
| C. | both hardware and software |
| D. | none of these |
| Answer» A. hardware | |
| 368. |
pixel phasing is a technique for…….. |
| A. | shading |
| B. | anti-aliasing |
| C. | hidden line removal |
| D. | none of these |
| Answer» B. anti-aliasing | |
| 369. |
a line connecting the points (1,1) and (5,3) is to be drawn, using the DDA algorithm. Find the values of x and y increments. |
| A. | x-increment= 1; y-increment=1 |
| B. | x-increment= 0.5; y-increment=1 |
| C. | x-increment= 1; y-increment=0.5 |
| D. | none of these |
| Answer» C. x-increment= 1; y-increment=0.5 | |
| 370. |
Which of the following algorithm can be used for circle generation? |
| A. | bresenham\s algorithm |
| B. | mid-point algorithm |
| C. | both a and b |
| D. | none of these |
| Answer» C. both a and b | |
| 371. |
aliasing means…….. |
| A. | rendering effect |
| B. | shading effect |
| C. | staircase effect |
| D. | cueing effect |
| Answer» C. staircase effect | |
| 372. |
slope of the line joining the points(1,2) and (3,4) is……. |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 373. |
a line segment…………… |
| A. | extends forward |
| B. | extends backward |
| C. | ends at two points |
| D. | extends forever both forward and backward |
| Answer» C. ends at two points | |
| 374. |
the multiplication of a vector and the reciprocal of its length is equal to …….. |
| A. | zero |
| B. | can\t define |
| C. | one |
| D. | none of the above |
| Answer» C. one | |
| 375. |
the process of turning on the pixels for a line segment is called……. |
| A. | line generation |
| B. | vector generation |
| C. | pixel generation |
| D. | a or b |
| Answer» D. a or b | |
| 376. |
the horizontal and vertical lines drawn by line drawing algorithm are…… |
| A. | less |
| B. | more |
| C. | constant |
| D. | none of these |
| Answer» C. constant | |
| 377. |
the width of 45 degree line drawn by line drawing algorithm is…………. |
| A. | constant |
| B. | not constant |
| C. | minimum |
| D. | maximum |
| Answer» B. not constant | |
| 378. |
the brightness of the line is dependent on the ……of the line. |
| A. | orientation |
| B. | start and end points |
| C. | length |
| D. | none of these |
| Answer» A. orientation | |
| 379. |
the horizontal and vertical lines appear …….the 45 degree line. |
| A. | straight than |
| B. | longer than |
| C. | brighter than |
| D. | none of these |
| Answer» C. brighter than | |
| 380. |
DDA stands for …………. |
| A. | data differential algorithm |
| B. | digital data algorithm |
| C. | digital differential analyzer |
| D. | digital differential algorithm |
| Answer» C. digital differential analyzer | |
| 381. |
the slope of a straight line is given as…….. |
| A. | m= (??y / ??x) |
| B. | m= (??x / ??y) |
| C. | m= (x / y) |
| D. | m= (y / x) |
| Answer» A. m= (??y / ??x) | |
| 382. |
the slope of a straight line is given as…….. |
| A. | m= y1-y2/x2-x1 |
| B. | m= y2-y1/x2-x1 |
| C. | m=x2-x1/y2-y1 |
| D. | m= x1-x2/y1-y2 |
| Answer» B. m= y2-y1/x2-x1 | |
| 383. |
in DDA line drawing algorithm, Δx or Δy, whichever is ………, is chosen as one raster unit. |
| A. | 1 |
| B. | 0 |
| C. | smaller |
| D. | larger |
| Answer» D. larger | |
| 384. |
sign function makes the DDA line drawing algorithm work in ………….quadrants. |
| A. | i and ii |
| B. | i and iii |
| C. | ii and iii |
| D. | all of above |
| Answer» D. all of above | |
| 385. |
if a line is to be drawn from (0,0) to (4,6) using DDA line drawing algorithm, the third point to be plotted is ……. |
| A. | (1,2) |
| B. | (2,3) |
| C. | (3,2) |
| D. | (2,1) |
| Answer» A. (1,2) | |
| 386. |
when a line with end-points (20,10) and (30,18) is to be drawn using DDA line drawing algrithm, ………is chosen as one raster unit. |
| A. | ??x |
| B. | ??y |
| C. | a or b |
| D. | any of above |
| Answer» A. ??x | |
| 387. |
when a line is to be drawn from (0,0) to (6,6) using DDA line drawing algorithm, the initial values for x and y are…….. |
| A. | 0.5, 0.5 |
| B. | (-0.5), (-0.5) |
| C. | 0, (-0.5) |
| D. | 0.5, 0 |
| Answer» B. (-0.5), (-0.5) | |
| 388. |
the DDA line drawing algorithm is …….. Dependent. |
| A. | orientation |
| B. | length |
| C. | end points |
| D. | display |
| Answer» A. orientation | |
| 389. |
the end point accuracy of DDA line drawing algorithm is …….. |
| A. | good |
| B. | better |
| C. | best |
| D. | poor |
| Answer» D. poor | |
| 390. |
floating point algorithm in DDA algorithm is…….. |
| A. | time efficient |
| B. | time consuming |
| C. | fast |
| D. | slow |
| Answer» B. time consuming | |
| 391. |
DDA line drawing algorithm for calculating pixel position is ……… the direct use of equation y = mx + b |
| A. | slower than |
| B. | faster than |
| C. | of equal speed to that of |
| D. | none of these |
| Answer» B. faster than | |
| 392. |
alorithm those use the outputs of the previous iteration, in the computation of outputs in the current iteration are called |
| A. | successive approximation |
| B. | incremental |
| C. | double-referencing |
| D. | scan-line |
| Answer» B. incremental | |
| 393. |
the advantage of Bresenham's algorithm over conventional DDA algorithm is …….? |
| A. | no rounding operation |
| B. | use of integer addition and subtraction |
| C. | producing smooth appearance |
| D. | less number of iteration |
| Answer» B. use of integer addition and subtraction | |
| 394. |
The basic attributes of a straight line segment are |
| A. | type |
| B. | width |
| C. | color |
| D. | all of these |
| Answer» D. all of these | |
| 395. |
A dashed line could be displayed by generating_________. |
| A. | inter dash spacing |
| B. | very short dashes |
| C. | both a and b |
| D. | a or b |
| Answer» A. inter dash spacing | |
| 396. |
A dotted line can be displayed by generating |
| A. | very short dashes with spacing equal to and greater than dash size |
| B. | very long dashes with spacing equal to or greater than dash size |
| C. | very short dashes with spacing equal to and greater than dash size |
| D. | dots |
| Answer» C. very short dashes with spacing equal to and greater than dash size | |
| 397. |
Which of the following is not a line-type? |
| A. | dashed line |
| B. | dark line |
| C. | dotted line |
| D. | all |
| Answer» B. dark line | |
| 398. |
In an application program, to set line-type attributes the following statement is used. |
| A. | setlinetype(lt) |
| B. | setlinetype(lt) |
| C. | setlinetype(lt) |
| D. | setline() |
| Answer» B. setlinetype(lt) | |
| 399. |
The algorithm which displays line-type attributes by plotting pixel spans is |
| A. | raster line algorithm |
| B. | raster scan algorithm |
| C. | random line algorithm |
| D. | random scan algorithm |
| Answer» A. raster line algorithm | |
| 400. |
the line drawn using line drawing algorithm should be displayed with ……brightness. |
| A. | varying |
| B. | constant |
| C. | maximum |
| D. | minimum |
| Answer» B. constant | |
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