FUNDAMENTALS OF COMPUTER

COMPUTER HARDWARE COMPONENTS FUNCTIONS

COMPUTER OUTPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A device that uses signals to make a magnet repel or attract a coil at the bottom of a cone which pumps out sound.
A
Speaker
B
3D Cutter
C
Digital Light Projector (DLP)
D
Digital Light Projector (DLP)
Explanation: 

Detailed explanation-1: -Neodymium magnet is commonly used permanent magnet in speakers because of high magnetization and demagnetization, and small-size. electromagnet, which will deform the cone more and produce more sound. Speakers are composed of a cone attached to an electromagnet, and a permanent magnet.

Detailed explanation-2: -loudspeaker, also called speaker, in sound reproduction, device for converting electrical energy into acoustical signal energy that is radiated into a room or open air.

Detailed explanation-3: -The center of the speaker cone is attached to one end, which gets driven back and forth by the moving coil. This cone is held at its edges by an airtight suspension or surround. As the cone moves, it pushes and pulls the surrounding air; by doing so it creates pressure waves in the air, called sound.

Detailed explanation-4: -Answer: Every amplifier (speaker) has an electrical current. When the current is changing, it produces a magnetic field. To make the cone (or panel) of the speaker move, magnets are used to create an opposing magnetic field which creates vibrations. These vibrations are the sound we hear.

There is 1 question to complete.