Q3 M4 - INSTALLING SIGNAL & ALARM SYSTEM: ELECTRIC BUZZER, ELECT

It is a signaling device which produces continues ringing sound when electrical energy is applied.

• Electric bell
• Electric buzzer
• Electric chime
• All of the above

It is a signaling device which produces a loud buzzing sound when activated by a push button.

• Electric bell
• Electric buzzer
• Electric chime
• All of the above

It is a signaling device which produces a pleasant musical sound when connected to the electrical source.

• Electric bell
• Electric buzzer
• Electric chime
• All of the above

It consists of a coil of wire wound around an iron core.

• Electromagnet
• Armature
• Contact spring
• Adjusting screw

A strip of metal that is located near the electromagnet.

• Electromagnet
• Armature
• Contact spring
• Adjusting screw

A small strip of flexible metal that is attached to the armature.

• Electromagnet
• Armature
• Contact spring
• Adjusting screw

It is a pointed screw which acts as the contact switch.

• Electromagnet
• Armature
• Contact spring
• Adjusting screw

It is a concave disc which produces a ringing sound when struck by the hammer.

• Electromagnet
• Armature
• Contact spring
• Gong

A signaling device used in fire alarm system.

• Electric bell
• Electric buzzer
• Electric chime
• All of the above

A small ball attached to the armature.

• Electromagnet
• Hammer
• Contact spring
• Adjusting screw