of the following groups of electrodes, which group is best suited for welding on moderate surface…

of the following groups of electrodes, which group is best suited for welding on moderate surface contaminants, galvanized, plated, painted or unclean surfaces?\nfill - freeze\nfast - fill\nlow - hydrogen\nfast - freeze

of the following groups of electrodes, which group is best suited for welding on moderate surface contaminants, galvanized, plated, painted or unclean surfaces?\nfill - freeze\nfast - fill\nlow - hydrogen\nfast - freeze

Answer

Brief Explanations:

Fast - fill electrodes are well - suited for welding on surfaces with moderate contaminants like galvanized, plated, painted or unclean surfaces as they can handle such conditions better compared to the others. Fill - freeze, low - hydrogen and fast - freeze are not the best choices for these types of contaminated surfaces.

Answer:

Fast - fill