Welding chapter 3 assignment Questions with correct answers

Shielding metal arc welding is also known as ________ welding Correct Answer - "Manual metal arc" (MMA or MMAW) What is the main factor that determines the type of electrode to be used Correct Answer - Base metal properties The input electrical power to operate the welding power source can be _______ or ______ phase electric Correct Answer - Single phased Three phased During arc welding the welder and all persons around must be protected from ______ of the welding arc Correct Answer - Inferred radiation Lost 2 functions of the shielded metal arc welding (SMAW) electrode coating Correct Answer - Deoxidation: it provides deoxidizers and fluxing agents to deoxidize and cleanse the weld metal Stabilization: it provides arc stabilizers to help maintain a stable arc What is the purpose of the shielded metal arc welding (SMAW) power source Correct Answer - To maintain a constant current output, ensuring the current remains relatively constant even if the arc distance and voltage change What type of power source is needed for shielded metal arc welding Correct Answer - Constant current