1. Arc Welding involves_________ between electrode and work piece. a) High Voltage & High Current c) High Voltage & Low Current b) Low Voltage & High Current d) Low Voltage & Low Current 2. What kind of power source has been used in GTAW process? a) Constant Current b) Constant Voltage c) Pulse Mode d) Spray Mode 3. To be most effective, visual inspection should be performed: a) before welding b) during welding c) after welding d) all the above 4. The ratio of load on time allowed to specified test interval time can be defined as a) Duty cycle b) OCV b) c) Input voltage d) all the above 5. Constant current power sources are referred as ………. a) Variable voltage power source b) Constant potential power sources 6. In which of following method will melt the base metals? a) Welding b) Brazing c) Soldering d) All of the above 7. In arc welding, the arc length directly relates to a) Current b) Voltage c) Both a & B 8. In E 7018 – What does 70 mean? a) 70 Ksi Tensile strength c) Both a & b d) None of the above b) 70 Ksi Yield strength d) only 9. The distance between the root and toe of a fillet weld is called (A) root gap (B) leg length (C) reinforcement (D) throat thickness 10.Lack of penetration in a butt-welded joint is due to (A) too low welding speed (B) short arc length (C) high current (D) low current 11.What is the major function of the coating on an arc welding electrode? a) Acts as a scavenger, removes oxides and impurities b) Influences incomplete penetration c) Liquefies the base metal d) Adds moisture and accelerates the cooling rate 12. In which type of Volt-Amp characteristics Self-regulating arc will occur? a) Constant Current c) Pulse Mode b) Constant Voltage d) Spray Mode 13. What is the major function of the coating on an arc welding electrode? a. Acts as a scavenger, removes oxides and impurities b. Influences incomplete penetration c. Liquefies the base metal 14. In SMAW, Arc volatage can be determined by ______ a) Arc length b) Ampere c) Electrode Dia d) None of the above 15. For heavy thickness steel plate welding, GTAW process mostly used with _______ a) Straight polarity b) Reverse Polarity C) both a & B d) DCEP 16. In GTAW, Width & penetration of weld majorly depends on____________ a) Current b) Travel speed c) Wire feed d) Arc length 17. The amount of energy produced by arc is ____________ a) Directly proportional to current & Voltage b) Indirectly proportional to current & voltage c) Directly proportional to current only d) Directly proportional to voltage only 18. In GTAW process, the tungsten is ____________ a) Source of electrons b) Serves as electrical terminal c) Both a & b d) None of the above 19. Why do we sharpening the Tungsten in GTAW? a) for more penetration b) for getting wider bead c) for producing optimum arc stability d) to avoid tungsten inclusion 20. In GMAW process, which mode of metal transfer is suitable for thin section welding? a) Spray transfer b) Short circuit c) Globular transfer d) Both a & b 21. In GMAW, Globular transfer is characterized by a drop size with a diameter ___________ a) less than that of electrode dia b) equal to that of electrode dia c) greater than that of electrode dia d) grater than that of contact tip dia 22. Which of the following combination will support Spray transfer mode in GMAW? a) Argon rich gas with DCEP b) above transition current c) Both a & b d) B only 23. If electrons flow from negative to positive terminal, then this can be called as a) Straight polarity b) Reverse polarity c) Both a & b d) b only 24. The distance between end of contact tube and the end of electrode is _____________ a) Arc length b) Electrode Extension c) stand off distance d) CTWD 25. Which of the following sequence is correct based on density of shielding gases? a) He>Ar>air b) Ar > He > Air c) Air > Ar> He d) Air > He > Ar 26. In E70T1-C, what does the term ‘0’ indicate? a) Welding position b) Performance capabilities c) Tensile strength d) Single pass 27. Statement A: Increasing the current increases electrode deposition Statement B: Excessive current produces convex bead a) Both statements are correct b) Both statements are wrong c) Statement A only correct d) Statement B only correct 28. What is/are the defects that are associated with FCAW process? a) Worm track b) Tungsten inclusion c) Porosity d) Both a & c 29. In SAW process, what are the type of fluxes based on manufacturing? a) Basic flux & Acidic flux b) Fused flux & Agglomerated flux c) Active flux & Neutral flux d) Both a & c 30. F7A2 -EH10K - What does the term ‘A’ refers? a) Tensile strength c) Agglomerated flux b) Heat treatment d) Impact test 31. In SAW welding process, increase in voltage increases a) Bead shape b) Flux consumption c) pick up of alloying elements d) All the above 32. In SAW welding, what is/are the most suitable reason for Pock marks? a) Higher flux burden b) High voltage c) High travel speed d) None 33. Why do we do preheat? a) To slow the cooling rate b) To remove moisture c) To reduce the temperature gradient between base metal & weld metal d) All of the above 34. Preheating depends on the ____________ a) Alloying elements b) Thickness of material c) Welding parameters d) Both a & b 35. Which of following statement(s) is/are correct regarding purging? Statement A: Steels that are having more than 5% Cr usually receives purging Statement B: Purging is to prevent root weld metal from oxidation a) Both are wrong b) Both are correct c) A only correct d) B only correct