Manual Metal Arc/Shielded Metal Arc Welding Test Welcome to your Manual Metal Arc/Shielded Metal Arc Welding Test 1. MMA welding was invented in USA Russia in 1888 Sweden UK None 2. Early MMA welding used Coated electrodes Bare metal rod with no flux coating TIG torch MIG wire None 1 out of 1 Previous Start Quiz Next Time's up Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.