10. For most industrial electrostatic precipitator installations particledrift velocity which is used to calculate the precipitation efficiency varies from
A. 0.1 to 1 ft/s
B. 3 to 8 ft/s
C. 15 to 20 ft/s
D. 60 to 80 ft/s
10. For most industrial electrostatic precipitator installations particledrift velocity which is used to calculate the precipitation efficiency varies from
A. 0.1 to 1 ft/s
B. 3 to 8 ft/s
C. 15 to 20 ft/s
D. 60 to 80 ft/s