Weld spatter refers to :
Polarity change is required in
The acetylene cylinder is usually painted with
Principal materials used in soldering are
Consumable electrode is used in
TIG welding:
In arc welding, the temperature of heat produced by the electric arc is the order of
------------ does not require a filler metal.
Porosity in welding
In submerged arc welding, an arc is produced between: