Computer Graphics MCQ online test with answers for MCA, BCA

Q26- ___ is used to control the direction of the electron beam in CRT.
a) Phosphorous coated screen
b) Focusing electrode
c) Control Electrode
d) Deflection yoke
Ans: d

Q27- There is a ___ coating on the inside front of every CRT.
a) Nitrogen
b) Phosphorous
c) Hydrogen
d) All of the above
Ans: b

Q28- The glow given off by the phosphor during exposure of the electron beam is known as.
a) Fluorescence
b) Phosphorescence
c) Persistence
d) All of the above
Ans: a

Q29- The continuing glow given off after the beam is removed is known as.
a) Fluorescence
b) Phosphorescence
c) Persistence
d) All of the above
Ans: b

Q30- A phosphor will no longer be fluorescent it is said to be ___
a) Burned
b) Buried
c) Browned
d) All of the above
Ans: a

Q31- Raster is a synonym for the term ___.
a) Array
b) Matrix
c) Model
d) All of the above
Ans: b

Q32- The rate at which the electron beam seams the surface of the CRT is often directly related to the frequency of the ___ Voltage.
a) Global line
b) Static line
c) Local line
d) All of the above
Ans: c

Q33- In India ___ cycle line voltage is used.
a) 40
b) 50
c) 30
d) 80
Ans: b

Q34- Each time the electron beam goes through a complete cycle of raster or scan lines, the CRT is said to be.
a) Refreshed
b) Flickered
c) Retrieved
d) None of the above
Ans: a

Q35- The perceptual threshold is greater than the frequency of standard line voltage a technique
Called ___ is often used.
a) Interleaving
b) Interweaving
c) Interlacing
d) All of the above
Ans: c

Q36- Refresh rate is significant ___ the persistence of the phosphors.
a) Longer
b) Smaller
c) Equal to
d) Extremely simple
Ans: a

Q37- An interlacing is used to ___ the raster–line cycle.
a) Create
b) Break
c) Exit
d) None of the above
Ans: b

Q38- Overscan on the deft is called top ___ overscan
a) Vertical
b) Horizontal
c) Diagonal
d) None of the above
Ans: a

Q39- Over-scan on the left is called left ___ overscan
a) Vertical
b) Horizontal
c) Diagonal
d) None of the above
Ans: b

Q40- Each time the electron beam scans from left to right it is an ___ mode
a) Read
b) Write
c) Execute
d) Cancel
Ans: b

Download Computer Graphic MCQs

41) The Pixel is the smallest piece of the display screen which can be controlled by setting ___ and ___
a) Intensity, color
b) Extensive, high bandwidth
c) Position, shape
d) None of the above
Ans: a

42) Interactive graphics permits ___, ___ user computer interaction.
a) Intensity, color
b) Extensive, high bandwidth
c) Position, shape
d) None of the above
Ans: b

43) PHIGS ___ supports nested hierarchical grouping of 3D primitives called ___
a) Programmer’s Hierarchical Interaction graphics system, structure.
b) Portable Hierarchical Interaction graphics standard, segment
c) Parallel Hierarchical Interaction graphics system, structure.
d) None of the above.
Ans: a

44) DVST ___ display colors and are available with ___ level of line intensity.
a) Don’t, single
b) Do, single
c) Do, double
d) Don’t double
Ans: a

45) The first graphics specification be officially standardized was ___, when this became official standard it was called ___
a) GKS, PHIGS
b) PHIGS, GKS
c) DVST, PHIGS
d) GKS, DVST
Ans: a

46) ___ gun stores the picture pattern & the _ gun maintains the picture display.
a) Primary, secondary
b) Flood, boundary
c) Primary, flood
d) None of these
Ans: c

47) In CRT, the beam is moved left to right it is ___- and when the beam is moved from right to left, it is ___.
a) ON, OFF
b) Raster, Random
c) Off, On
d) All of the above
Ans: a

48) In Cartography, CG is used to represent ___, weather maps, ___, contour maps, population density maps, and so on.
a) Geographic maps, oceanographic charts
b) Pie charts, bar charts
c) Hectographs, diagram
d) All of the above
Ans: a

49) With ___ dynamics it is possible to change shape & with ___ dynamics, user can move & tumble objects
a) Motion, update
b) DSP, CRT
c) Update, motion
d) None of the above
Ans: c

50) In raster scan display, graphic primitives are specified in terms of their ____ & must be scan converted into their corresponding pixel in the ___.
a) Endpt, frame buffer
b) startpt, frame buffer
c) frame buffer, end pt.
d) frame buffer, start pt.
Ans: a

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