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d) 73 degrees 4. If a groove for a weld goes through the entire base metal thickness, it makes a(n) __ a) complete joint penetration (CJP) weld b) subsurface joint penetration (SJP) weld c) partial joint penetration (PJP) weld d) axial joint penetration (AJP) weld 5. Before practicing a V-groove weld in the overhead position (4G),you should __ a) change to constant voltage DC b) build a practice pad with stringer beads c) increase the amperage to the top of the correct range d) change to E6010 electrodes
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Juanamaestro · Tutor durante 5 años
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4. If a groove for a weld goes through the entire base metal thickness, it makes a(n) __<br />a) complete joint penetration (CJP) weld<br />b) subsurface joint penetration (SJP) weld<br />c) partial joint penetration (PJP) weld<br />d) axial joint penetration (AJP) weld<br /><br />The correct answer is a) complete joint penetration (CJP) weld.<br /><br />Explanation: When a groove for a weld goes through the entire base metal thickness, it is considered a complete joint penetration (CJP) weld. This means that the weld metal has penetrated through the entire thickness of the base metal, resulting in a strong and stable weld joint.<br /><br />5. Before practicing a V-groove weld in the overhead position (4G) you should __<br />a) change to constant voltage DC<br />b) build a practice pad with stringer beads<br />c) increase the amperage to the top of the correct range<br />d) change to $E6010$ electrodes<br /><br />The correct answer is b) build a practice pad with stringer beads.<br /><br />Explanation: Before practicing a V-groove weld in the overhead position (4G), it is recommended to build a practice pad with stringer beads. This allows the welder to practice and develop their skills in a controlled environment before applying the weld on the actual joint. Building a practice pad with stringer beads helps the welder to understand the proper technique and achieve a high-quality weld.
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