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The hard disks of computers are usually glass or aluminum coated with a very thin layer of fine grained magnetic material.
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∙ 12y ago
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Why aluminium is used for pointer and disc of measuring instrument?
Because aluminium is not magnetic.
Why most practical energy conversion devices used magnetic field as the coupling medium between electrical and magnetic system?
answer
What wave does not require a medium for energy transfer?
Electro-magnetic waves.
Do waves have magnetic polarity?
No, waves do not have magnetic polarity. Waves are disturbances or vibrations that propagate through a medium or space, and they do not possess magnetic properties. Magnetic polarity is a characteristic of magnetic materials such as magnets, where they have a north and south pole.
What do you understand by magnetic susceptibility?
Susceptibility of a magnet is the ability of a medium to get affected by an external field.
What are the type of ROM?
two types - magnetic in the form of magnetic tape,magnetic disc and optical in the form of compact disc.
What is the main feature of each computer generation?
vacuum tubes, punch cards, magnetic tape, large sizetransistors, punch cards, magnetic tape, harddisc, medium sizeintegrated circuits, punch cards, magnetic tape, harddisk, medium or small sizemicroprocessors, interactive user interface, harddisk, floppy disc, very small size
Is a magnetic disc affected by a theft detection device or magnetic theft alarm sensor?
a magnetic theft alarm sensor
What is a related records stored on a storage medium such as hard disc or optical disc?
a File
What is the Principle of magnetic recording and reproduction explain with sketches?
The principle of magnetic recording and reproduction involves encoding information onto a magnetic medium using changing magnetic fields. When recording, information is stored as magnetic patterns on the medium. To reproduce the information, a magnetic head reads the patterns and converts them into electrical signals for playback. The sketches would show the process of writing and reading magnetic data on a medium using a magnetic head.
What is rigid magnetic storage medium?
Hard Disk
What is magnetic tape used for?
It is a data storage medium
What storage requires sequential access of data?
magnetic disc
What is a large capacity magnetic storage medium?
A hard drive.
Why aluminium is used for pointer and disc of measuring instrument?
Because aluminium is not magnetic.
Why might a loudspeaker damage a floppy disc but not a?
A floppy disc use a magnetic pattern to store data, and loudspeakers are usually based around a (strong) magnet. The magnet can upset the magnetic pattern, making the data unreadable.
Is BluRay disc an output device?
A blu ray disc is a storage medium, not an input/output device.
