Electrical power is VI=20×400=8000 J/s. Useful transferred heat rate is ηVI=0.6×8000=4800 J/s. Divide by travel speed to obtain line energy 4800/5=960 J/mm. Efficiency reduces, rather than increases, delivered heat.
More Welding and joining questions
GATE 2026 MT Q14– Which one of the following fusion-welding techniques results in the least heat-affected…
GATE 2025 MT Q46– Which of the following statements is/are CORRECT with respect to fusion welding and…
GATE 2025 MT Q47– Which of the following welding processes does NOT / do NOT utilize consumable electrode?
GATE 2024 MT Q49– Which of the following statements is/are correct for joining processes?
GATE 2024 MT Q65– Arc welding has actual heat input 200 J mm-3, current 200 A, voltage 20 V, weld…
GATE 2023 MT Q46– Match welding techniques with the most appropriate applications. Column I: P. Submerged…