Problemas
A. shielding gas B. flux C. filler metal D. hot gases 3. What does slag do for the hot weld metal? A. Protects it from for themphere while it cools B. Keeps it dry C. Adds filler metal D. Provides different colored sparks different colored sparkleeprode that provides alloys to the weld? A. slag B. shielding gas C. flux D. welding power supply 7. What gases are major atmospheric contami- nants to molten weld metal? A. oxygen and acetylene B. angon and carbon dioxide C. nitrogen and carbon monoxide D. oxygen and nitrogen 8. Because of the __ characteristic, no some edge beveling I preparation is joints in metal up to 1/2in A. wire feed system B. deep penetration C. welder's power supply D. shielding gas 9. Small agricultural FCA welding wire feed sys- tems usually have __ feed rollers. A. 1 B. 2 C. 3 D. 4 10. The main limitation of flux cored are welding is that it is confined to ferrous metals and nickel-based alloys. A. true B. false 11. What input voltage do most small agricultural FCA welders need? A. 240V B. 208V C. 90V D. 120V 12. Where in FCA welding can an "arc stabilizer" be found? A. welding power supply B. welding gun C. flux D. wire feed control continued 13. Accord welding rabletectrodes can be used to ing frinout a shielding gas? A. T-4 B. T-2 c T-3 D. 1.5 D. T-5 mild steel FCA tensiles electrode E7OT-1 mild ensile strength of approximately __ psi A. 70 B. 700 c 7,000 D. 70,000 D. 70,000 he followinglding 15. problemproperly?welding wire that is probal improperly? A. CO_(2) B. H_(2)O c angon D. C-25 the electro shielding they are called 16. When all of the shielding, they electrodes pret shielded. A. true B. false 17.false ating position is preferred for weld. Whin the flat position? A. backhand B.forehand C. leading angle D. 90^circ angle 18 D. of penetration is not as great with the Depthand method as it is with the forehand method. A. true B. false 19. The __ is measured for the end of the electrode contact tube to the point the arc begins at the end of the electrode. A. work distance B. weld arc length C. height of arc D. electrode extension 20 __ can be caused by moisture in the flux, improper er gun manipulation, or surface contamination. A. Smoke B. Porosity D. Electric shocks
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Sergioélite · Tutor durante 8 años
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3. What does slag do for the hot weld metal?<br />A. Protects it from the atmosphere while it cools<br /><br />7. What gases are major atmospheric contaminants to molten weld metal?<br />D. oxygen and nitrogen<br /><br />8. Because of the __ characteristic, no edge beveling preparation is needed for joints in metal up to 1/2 inch.<br />B. deep penetration<br /><br />9. Small agricultural FCA welding wire feed systems usually have __ feed rollers.<br />B. 2<br /><br />10. The main limitation of flux-cored are welding is that it is confined to ferrous metals and nickel-based alloys.<br />B. false<br /><br />11. What input voltage do most small agricultural FCA welders need?<br />D. 120V<br /><br />12. Where in FCA welding can an "arc stabilizer" be found?<br />D. wire feed control<br /><br />14. An electrode with tensile strength of approximately __ psi.<br />C. 7,000<br /><br />15. Welding wire that is improperly shielded.<br />D. $C-25$<br /><br />16. When all of the electrodes are properly shielded.<br />A. true<br /><br />17. What welding position is preferred for welds in the flat position?<br />B. forehand<br /><br />18. Depth of penetration is not as great with the __ method as it is with the forehand method.<br />B. false<br /><br />19. The __ is measured from the end of the electrode contact tube to the point the arc begins at the end of the electrode.<br />D. electrode extension<br /><br />20. __ can be caused by moisture in the flux, improper electrode gun manipulation, or surface contamination.<br />B. Porosity
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