Which of the following defects occur due to incorrect welding techniques?

Related MCQs

• If the total efficiency is 0.35 in arc welding. Then what is the welding speed in mm/sec if the cross-sectional area is 5mm2, welding power is 2 kW and the heat required in melting the metal is 100 J/mm3.
• Which of the following defects occur due to flux employed and electrode coating?
• Which of the following defects occur due to the entrapment of gas bubbles by the freezing dendrites during the cooling of molten pad?
• Which of the following defects occur due to filler material having a different rate of contraction compared to parent metal?
• Which of the following defects occur due to scattering of metal around the vicinity of weld?
• Which of the following defects occur due to melting or burning away of base metal?
• Which of the following welding process in which heat is produced for welding by a chemical reaction?
• Consider a situation in which a welding operation is being performed with V = 20 volts, I = 200 A, and the cross-sectional area of the weld bead is 30 mm2. Estimate the welding speed if the workpiece and electrode are made of (a) aluminum, (b) carbon steel, and (c) titanium. Use an efficiency of 75%.
• What is the differentiating factor between flux core arc welding and gas-shielded metal arc welding processes?
• In inertia friction welding energy of welding machine is used.