Final answer:
Flyash is removed from bag filters by a system of rappers, not electrostatic precipitators. Electrostatic precipitators use charges to attract particles in industrial and home settings, while rappers provide a mechanical action to clean filters.
Step-by-step explanation:
Flyash is removed from bag filters primarily by a system of rappers. Electrostatic precipitators are devices that clean the airstream by applying charges to particles in the air and then attracting those charged particles to a filter. The overall process involves the attraction or repulsion between two charged bodies, an effect that is harnessed in these precipitators to remove over 99% of particles from stack gas emissions in industrial applications. However, the question specifically asks about the removal of fly ash from bag filters, which are typically cleaned by mechanical actions such as shaking (shakers) or striking (rappers), rather than the electrical methods used by electrostatic precipitators.