Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Chapter: 2
Q61:
Which refresh method is used to avoid burning phosphor in vector displays?
A. Low voltage
B. Delayed refresh cycle
C. Interlaced scan
D. Frame cap
Correct Answer:
B
Chapter: 2
Q62:
In raster scan, what happens during vertical retrace?
A. The beam resets to the top left
B. Screen is cleared
C. Beam goes to center
D. New buffer is loaded
Correct Answer:
A
Chapter: 3
Q63:
What is the function of the video controller in raster graphics systems?
A. Controls input devices
B. Handles user commands
C. Controls the display device
D. Processes user graphics commands
Correct Answer:
C
Chapter: 3
Q64:
In raster systems, what stores the image to be displayed on screen?
A. CPU
B. Register
C. Frame buffer
D. Cache memory
Correct Answer:
C
Chapter: 3
Q65:
The process of converting a picture definition into pixel intensities is called ______.
A. Scan conversion
B. Frame buffering
C. Vector plotting
D. Line encoding
Correct Answer:
A
Chapter: 3
Q66:
Which component helps offload graphics processing from the CPU?
A. Display processor
B. Cache controller
C. I/O controller
D. Graphics driver
Correct Answer:
A
Chapter: 3
Q67:
In raster scan systems, screen refresh happens at a rate of __ frames per second.
A. 30
B. 45
C. 60
D. 75
Correct Answer:
C
Chapter: 3
Q68:
Frame buffer coordinates are stored using which coordinate system?
A. Polar
B. Cartesian
C. Hyperbolic
D. Rectangular
Correct Answer:
B
Chapter: 3
Q69:
The value in the frame buffer is used to set ______ of the CRT beam.
A. Position
B. Speed
C. Intensity
D. Size
Correct Answer:
C
Chapter: 3
Q70:
Which adapter introduced 640x350 resolution with 16 colors?
A. CGA
B. EGA
C. VGA
D. XGA
Correct Answer:
B
Chapter: 3
Q71:
To avoid flicker and snow, which adapter was introduced as an improvement over CGA?
A. EGA
B. SVGA
C. MCGA
D. XGA
Correct Answer:
A
Chapter: 3
Q72:
A raster scan system with a display processor is used to ______.
A. increase RAM
B. store OS
C. reduce CPU load
D. improve resolution
Correct Answer:
C
Chapter: 3
Q73:
The register that is incremented pixel by pixel across each scan line is:
A. Y register
B. X register
C. Pixel register
D. Buffer register
Correct Answer:
B
Chapter: 3
Q74:
What happens to the Y register after completing a scan line?
A. It is incremented
B. It is set to 0
C. It is unchanged
D. It is decremented
Correct Answer:
D
Chapter: 3
Q75:
How many pixels per second must be processed at 60 frames per second for a 640x480 display?
A. 1843200
B. 18432
C. 30720
D. 76800
Correct Answer:
A
Chapter: 3
Q76:
Which memory area holds the pixel intensity values for each screen location?
A. Video RAM
B. Frame buffer
C. System stack
D. Data register
Correct Answer:
B
Chapter: 3
Q77:
MCGA supports which graphics resolution and color depth?
A. 320x200 with 4 colors
B. 640x480 with 2 colors
C. 640x350 with 16 colors
D. 320x200 with 256 colors
Correct Answer:
D
Chapter: 3
Q78:
In raster scan, a group of adjacent pixel intensities is stored in:
A. Display cache
B. Frame block
C. Pixel register
D. Pixel stack
Correct Answer:
C
Chapter: 3
Q79:
Which display adapter allows the CPU to be freed from graphics operations?
A. MA
B. Video card
C. Display processor
D. System RAM
Correct Answer:
C
Chapter: 3
Q80:
Scan conversion is used to digitize which type of graphics input?
A. Text
B. Line segments
C. Registers
D. Video streams
Correct Answer:
B