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Questions and Answers
It is a signal (such as a loud noise or flashing light) that warns or alerts also : a device that signals.
It ls an alarm device that produces an audible signal tone when electric energy is applied.
This is a screw that serves as a contact switch to the contact spring.
This is part from the gong and it produces a loud sound when struck by the hammer.
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This is a magnetic wire wound on an insulated soft iron bolt. With the application of electric current, it produces a strong magnetic attraction that attracts the armature
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• This is a small ball attached to the armature, which strikes the gong that produces audible sounds when electric current runs through the electromagnet.
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