9) a) Write any two important parts of a moving-coil load speaker. b) Write the working principle of this device.
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Answer: a) Magnet: The magnet provides the fixed magnetic field against which the field from the coil operates. The magnet is typically made from ferrite or powerful neodymium. (2) Chassis / frame : The moving coil loudspeaker is generally built on a circular frame - occasionally these may also be elliptical.
b)The moving coil loudspeaker performs well and is able to be manufactured relatively easily. However, like all transducers converting electrical waveforms into sound, its operation can be complex as the moving coil loudspeaker links electrical and mechanical domains.
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