Technology MCQs

✅ The correct answer is option B.
The flyback is usually connected to the system that pulls the electron beam across the screen in one direction to ‘paint’ a line of the image and then returns in the other direction much faster.

✅ The correct answer is option D.
The first laser was a solid state laser. Solid state refers to any solid material like a glass rod. Diode lasers are very common because they are used to read compact disks and digital video disks in computers, CD players, and DVD players. Before diode lasers, the most common type of laser may have been the helium-neon laser, in which the active medium is a combination of the two gasses helium and neon.

✅ The correct answer is option A.
The transformer is used to transform a medium voltage supply to a low voltage supply, e.g. from 11 000 V to 400 V. A transformer is rated in kVA, kilo-Volt-Amps, which is a measurement of electrical power.

✅ The correct answer is option B.
Some authorities are recommending TV’s, VCR’s and Stereo’s be connected to power strips with switches and turned off when not in use to save energy. Your remote will not work until power is switched back on.

✅ The correct answer is option A.
It’s commonly used for MP3 players, computer BIOS code and “thumb” drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles) so they’re not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk) it is an excellent choice for storing the operating code for small personal electronics like PDAs, cell phones, digital cameras, and the data in items like MP3 players.

✅ The correct answer is option A.

✅ The correct answer is option B.
A chip found in alomst every microprocessor…

✅ The correct answer is option B.

✅ The correct answer is option D.

✅ The correct answer is option C.
So named because it resists (or inhibits) the flow of current.