Heat supplied to the cathode by directing a current through a coil of wire is called
1.Electron gun
2.Electron beam
3.Filament
4. Anode and cathode
The devices which converts the electrical energy into light is called
1.Liquid-crystal displays
2.Non-emitters
3.Plasma panels
4.Emitters
The maximum number of points that can be displayed without overlap on a CRT is referred as
1.Picture
2.Resolution
3.Persistence
4.Neither b nor c
Which devices provides positional information to the graphics system ?
1.Input devices
2.Output devices
3.Pointing devices
4.Both a and c
Aspect ratio means
1.Number of pixels
2.Ratio of vertical points to horizontal points
3.Ratio of horizontal points to vertical points
In graphical system the array of pixels in the picture are stored in
1.Memory
2.Frame buffer
3.Processor
4.All of the mentioned
In LCD the refresh rate of the screen is
1.60 frames/sec
2.80 frames/sec
3.30 frames/sec
4.100 frames/sec
In which system the Shadow mask methods are commonly used
1.Raster-scan system
2.Random-scan system
3.Only b
4.Both a and b
On a black and white system with one bit per pixel the frame buffer is commonly called as
1.Pix map
2.Multi map
3.Bitmap
4.All of the mentioned
Potentiometers mounted at the base of the joystick measures
1.The amount of movement
2.The direction
3.Position
4.Resolution
Random-scan system mainly designed for
1.Realistic shaded screen
2.Fog effect
3.Line-drawing applications
4.Only b
Space ball provide________ degree of freedom.
1.10 degree
2.6 degree
3.8 degree
4.12 degree
The device which is used to position the screen cursor is
1.Mouse
2.Joystick
3.Data glove
4.Both a and c
The most commonly used input device is
1.Mouse
2.Keyboard
3.Scanner
4.Printer
The number of pixels stored in the frame buffer of a graphics system is known as
1.Resolution
2.Depth
3.Resalution
4.Only a
The primary output device in a graphics system is_________
1.Scanner
2.Video monitor
3.Neither a nor b
4.Printer
The process of digitizing a given picture definition into a set of pixel-intensity for storage in the frame buffer is called
1.Rasterization
2.Encoding
3.Scan conversion
4.True color system
Trackball is
1.Two-dimensional positioning device
2.Three- dimensional positioning device
3.Pointing device
4.None of the mentioned
Which display devices allows us to walk around an object and view it from different sides.
1.Direct view storage tubes
2.Three-dimensional devices
3.Flat panel display devices
4.Plasma panel display devices
Which is the ball that can be rotated with the fingers or palm of the hand?
1.Space ball
2.Trackball
3.Only a
4.oth b and c
Which keys allows user to enter frequently used operations in a single key stroke?
1.Function keys
2.Cursor control keys
3.Trackball
4.Control keys
______ is used for detecting mouse motion.
1.Optical sensor
2.Rollers on the bottom of mouse
3.Both a and b
4.Sensor
_______ is used for 3D positioning and modeling animation and other application.
1.Trackball
2.Spac ball
3.All of the mentioned
4.None of the mentioned
________ are used to measure dial rotations.
1.Potentiometers
2.Volta meter
3.Parameter
4.Only a
________ stores the picture information as a charge distribution behind the phosphor-coated screen.
1.Cathode ray tube
2.Direct-view storage tube
3.Flat panel displays
4.3D viewing device