Consider the following excerpt: The metallic droplet, since its appearance at the tip of the electrode wire, is subjected to several forces that ca...

Consider the following excerpt: The metallic droplet, since its appearance at the tip of the electrode wire, is subjected to several forces that can act favorably or not to its detachment. The droplet is transferred when the sum of the detachment forces is greater than its retention forces. Source: SCOTTI, A.; PONOMAREV, V. Soldagem MIG/MAG: melhor entendimento, melhor desempenho. São Paulo: Artliber Editora, 2008. (Adapted). Considering this information and the contents studied about the forces that govern metallic transfer, analyze the acting forces arranged below and associate them with their respective characteristics: 1) Gravitational force. 2) Aerodynamic force (drag). 3) Surface tension force. 4) Vapor jet forces. ( ) Net force, the retention of the molten droplet at the electrode tip and its magnitude at the time of detachment is performed under its own weight. ( ) In manual welding, when the electrode is pointed downwards, it is the detachment force and, in suspended welding, when the electrode is pointed upwards, it is the retention force. ( ) This force occurs with the heat generated by welding, in the generation of metal vapors, which, when evaporated, couple in the electric arc with the droplet. ( ) The separation of the droplet from the electrode tip, by means of the gas flow, is the objective of this force, which can be affected by the electrode coating or gas quantity. Now, choose the CORRECT alternative:


1. 1, 3, 4, 2.
2. 1, 2, 4.
3. 3, 4, 1, 2.
4. 4, 3, 1, 2.
5. 3, 1, 4, 2.