Computer Graphics Questions & Answers – Graphics Hardware and Display devices

This section of our 1000+ Computer Graphics multiple choice questions focuses on Graphics Hardware and Display devices.

1. Which devices provides positional information to the graphics system ?
a) Input devices
b) Output devices
c) Pointing devices
d) Both a and c
View Answer

Answer: d
Explanation: Input devices positional information to the system they often called pointing devices.

2. The number of pixels stored in the frame buffer of a graphics system is known as
a) Resolution
b) Depth
c) Resalution
d) Only a
View Answer

Answer: d
Explanation: Number of pixels determines the resolution .

3. In graphical system, the array of pixels in the picture are stored in
a) Memory
b) Frame buffer
c) Processor
d) All of the mentioned
View Answer

Answer: a
Explanation: Frame buffer is mainly used to store pixels.

4. Heat supplied to the cathode by directing a current through a coil of wire is called
a) Electron gun
b) Electron beam
c) Filament
d) Anode and cathode
View Answer

Answer: c
Explanation: In CRT the filament is responsible for supply of power.

5. The maximum number of points that can be displayed without overlap on a CRT is referred as
a) Picture
b) Resolution
c) Persistence
d) Neither b nor c
View Answer

Answer: b
Explanation: none.

6.________ stores the picture information as a charge distribution behind the phosphor-coated screen.
a) Cathode ray tube
b) Direct-view storage tube
c) Flat panel displays
d) 3D viewing device
View Answer

Answer: b
Explanation: Instead of refreshing, DVST stores the picture information behind the screen.
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7. The devices which converts the electrical energy into light is called
a) Liquid-crystal displays
b) Non-emitters
c) Plasma panels
d) Emitters
View Answer

Answer: d
Explanation: Emissive displays are devices that convert electrical energy into light.

8. In which system, the Shadow mask methods are commonly used
a) Raster-scan system
b) Random-scan system
c) Only b
d) Both a and b
View Answer

Answer: a
Explanation: Raster-scan system uses shadow-mask method because they produce wide range of colors.

9. The process of digitizing a given picture definition into a set of pixel-intensity for storage in the frame buffer is called
a) Rasterization
b) Encoding
c) Scan conversion
d) True color system
View Answer

Answer: c
Explanation: The digitization process is called scan conversion.

10. Which display devices allows us to walk around an object and view it from different sides.
a) Direct view storage tubes
b) Three-dimensional devices
c) Flat panel display devices
d) Plasma panel display devices
View Answer

Answer: b
Explanation: 3D display devices allows user to view the object from different sides.

11. In LCD, the refresh rate of the screen is
a) 60 frames/sec
b) 80 frames/sec
c) 30 frames/sec
d) 100 frames/sec
View Answer

Answer: a
Explanation: LCD screen is refreshed at 60 frames per second.

12. Random-scan system mainly designed for
a) Realistic shaded screen
b) Fog effect
c) Line-drawing applications
d) Only b
View Answer

Answer: c
Explanation: Random-scan system mainly designed for Line-drawing applications.

13. The primary output device in a graphics system is_________
a) Scanner
b) Video monitor
c) Neither a nor b
d) Printer
View Answer

Answer: b
Explanation: The video monitor is the commonly used output device.

14. On a black and white system with one bit per pixel, the frame buffer is commonly called as
a) Pix map
b) Multi map
c) Bitmap
d) All of the mentioned
View Answer

Answer: c
Explanation: Bit map frame buffer is always 1 bit per pixel.

15. Aspect ratio means
a) Number of pixels
b) Ratio of vertical points to horizontal points
c) Ratio of horizontal points to vertical points
d) Both b and c
View Answer

Answer: d
Explanation: none.

Sanfoundry Global Education & Learning Series – Computer Graphics.

To practice all areas of Computer Graphics, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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