In which of the following parts of the cathode ray tube, is a huge amount of heat released to the cathode by directing a current through a coil of wire?
Electron gun
Phosphorus coated tube
Filament
Anode and cathode
Correct Answer :
C. Filament
In CRT, the filament is responsible to supply power when an electron gun release the electron then it focusing to hit the phosphorus screen to display the picture.
Related Questions
CRT stands for,
Cathode Random Tunnel
Cathode Ray Tube
Cathode Random Tube
Cathode Ray Tunnel
A beam of electron moves through each row, its intensity is alternatively turned ___ which helps to create a pattern of spots that are illuminated.
On and off
Power interrupt
Up and down
All of the above mentioned
In Bressenhams line algorithm, there are certain conditions for deciding the successive parameters. Of the distances d1
Positive
Equal
Negative
Can be any of the above
A transformation method which may cause the change in a shape of an object is referred as,
Rotation
Scaling
Reflection
Shear
Raster scan systems generally use ___ to display an image.
Frame buffer
Display controller
Display file program
None of the These
Which of the following line-generating algorithms is the most effective and efficient?
Midpoint algorithm
Bresenham's Line algorithm
DDA algorithm
None of the mentioned above
Consider the following statement:
The boundary is specified in a single color, and the algorithm proceeds pixel by pixel until the boundary color is encountered.
The above statement defines which of the following algorithms?
Scan-line fill algorithm
Boundary-fill algorithm
Entire fill algorithm
Slide curve algorithm
Which of the following properties is followed by the Bresenham's algorithm?
It is an incremental method
It chooses points randomly
It uses floating point operations
All of the above
The fundamental geometric transformations are as follows:
Scaling
Translation
Rotation
All of the Above
Which of the following is a better option for drawing a smooth line on the screen?
Raster Scan Display
Random Scan Display
Both A and B
None of the above mentioned
Which one of the following does not fit for Random Scan and Raster Scan?
Polygon Drawing Techniques
Line Drawing Techniques
Techniques to display an image on the screen
Only A
We set all scale factors to reduce the object's dimension.
Greater than 0
Less than 1
in Between 0 and 1
None of the Above
The amount of pixels contained in a graphics system's frame buffer is referred to as,
Resolution
Screen Size
Screen Color
None of the above mentioned
A video display device with the smallest height, lowest power usage, and lightest weight is -
LED display device
CRT display device
Flat panel display device
None of the above mentioned
What is the range of the pixels in a Grayscale images?
0 - 1
0 - 255
0 - 210
None of the above
The main role of a frame buffer is the ___ of the video signals that drive the display device.
Storage, conditioning, and output
Same speed
Different speed
None of the mentioned above
The translation of a specified picture description into a series of pixel-intensity values for storage in the frame buffer is known as digitization, it is also known as ...,
Scan conversion
Randomization
Rasterization
Encoding
Which of the following is true with respect to the Bresenham's line drawing algorithm?
It overcomes the drawbacks of DDA line drawing algorithm
The DDA algorithm was proposed to overcome the limitations of Bresenham's line drawing algorithm
Both a. and b.
None of the above
Which of the following is a matrix form of 2D translation equation is,
P'=R*P
P'= P + R
P'= P / R
None of the above mentioned
What is a necessary to specify to generate rotation?
Specific distances between dx and dy
Rotation angle ?
Scaling
Repositioning
Which controller is used in the frame buffer?
Display controller
Data controller
Digital controller
None of the above mentioned
In a graphical user interface, the most common input device is,
Mouse
Keyboard
Monitor
Joy stick
In which of the following transformation methods of Computer Graphics is the Shape of the Object not deformed?
Translation
Shearing
Both a. and b.
None of the above
Which of the following ports resembles the coordinates from the real-world system?
Window port
View Port
Universal Port
None of the above
The distances between two points (dx, dy) are referred to as translation distances (dx, dy).
Translation vector or Shift vector
Translation difference
Only B
None of these
In a graphics system, the most prominent output device is,
VDU (Visual Display Unit)
Printer
Joystick
None of the above mentioned
With reference to Random Scan Display, which of the following options is correct?
It has an electron beam that directed only to the screen areas where any picture has to be displayed.
It has a good pixel amount.
It's ideal for line drawing.
All of the above mentioned.
The colour transformation is performed in the centre of the process___
Dual color model
Single color model
Rotation color model
None of these
|m|
A set proportional to a small horizontal deflection voltage
A set corresponding vertical deflection
Only B
All of the mentioned above
Amongst which one of the most basic transformation methods which may applied in three-dimensional planes -
Rotation
Translation
Scaling
All of the mentioned above