Too long an arc will cause
Direct Answer
Option A: Low penetration coarse splatter & flat bead
An excessively long arc results in increased voltage, leading to low penetration, unstable arc characteristics, and significant coarse splatter. The instability often produces a flat, uneven weld bead because the heat is not sufficiently concentrated to fuse the base metal effectively.
All Options
Detailed Explanation & Context
An excessively long arc results in increased voltage, leading to low penetration, unstable arc characteristics, and significant coarse splatter. The instability often produces a flat, uneven weld bead because the heat is not sufficiently concentrated to fuse the base metal effectively.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).
Practice Full MEK Set 4
Test yourself with 30 interactive questions, live timer, and instant score.