question_answer

The below diagram shows electrostatic precipitator. Identify 1, 2 and 3.      

A) 1 - Discharge corona, 2 - Negatively charged wire, 3 - Collection plate grounded

B) 1 - Discharge corona, 2 - Positively charged wire, 3 - Collection plate grounded

C) 1 - Discharge corona, 2 - Negatively charged wire, 3 - Collection plate burnt

D) 1 - Uncharge corona, 2 - Positively charged wire, 3 - Collection plate never grounded