Mechanical QuizzesTo start your quizzes, Fills the details and Click on the “Next” button below. Your results are will be sent to your Email address. Best Of Luck 👍✌ !!! Welcome to your Welding Quizzes Full name Email 1. Which one of the following is not a fusion welding process? Brazing Gas welding Arc welding 2. Grey cast iron is generally welded by..... Arc welding Gas welding TIG welding 3. The strength of brazed joint Increases up to certain gap between the two joining surfaces beyond which it decreases Increases with increase in gap between the two joining surfaces Decreases with increase in gap between the two joining surfaces 4. In a 1G welding position, the pipe or object is rotated about its longitudinal axis (horizontal X-axis) Pipe is arranged at an angular position approximately 45 degrees from the reference axis the pipe is in a horizontal or X-axis position but the pipe cannot be rotated. The welder carries out welding while moving around the pipe 5. Welding of aluminum is difficult due to its low melting point high tendency of oxidation high thermal conductivity and low density 6. In fusion welding process, within the heat affected zone, the work material undergoes.. microstructure changed but does not melt Both melting and microstructure changes after solidification neither melting nor microstructure changes after solidification 7. In a 5G welding position, the pipe or object is rotated about its longitudinal axis (horizontal X-axis) Pipe is arranged at an angular position approximately 45 degrees from the reference axis the pipe is in a horizontal or X-axis position but the pipe cannot be rotated. The welder carries out welding while moving around the pipe 8. Seam welding is a multi spot welding continuous spot welding arc welding 9. Lap joint are employed on plates having thickness up to 5 to 10 mm more than 3 mm less than 3 mm 10. Which gases are used in TIG welding? CO2 and H2 argon and helium helium and neon 11. In a 6G welding position, the pipe or object is rotated about its longitudinal axis (horizontal X-axis) Pipe is arranged at an angular position approximately 45 degrees from the reference axis the pipe is in a horizontal or X-axis position but the pipe cannot be rotated. The welder carries out welding while moving around the pipe 12. In a 2G welding position, the pipe or object is rotated about its longitudinal axis (horizontal X-axis) pipe or object is kept vertical and welding is carrying out horizontally on a horizontal plane the pipe is in a horizontal or X-axis position but the pipe cannot be rotated. The welder carries out welding while moving around the pipe 13. Preheating is required in wedding.. Stainless steel High speed steel Cast iron 14. Oxidizing flame is used to weld Stainless steel Copper Cast iron 15. For arc welding, open circuit voltage is of the order of 40 to 95 volts 100 to 125 volts 130 to 170 volts 16. Materials used for coating the electrode is called Flux Binder Slag 17. For welding of non-ferrous metals which following current is preferred by arc welding.. AC low frequency AC high frequency DC 18. The main criteria for selection of electrode diameter in arc welding process is.. Voltage used Thickness of material Material to be welded 19. In projection welding diameter of projection as compared to thickness of the sheet is proximately Half Double Equal 20. For welding of round bars which welding process is used.. Spot welding Seam welding Projection welding 21. In welding, the flux is used for To permit perfect cohesion of material To remove the oxide of the metals formed at high temperature All above 22. A single V and single U butt weld are for sheets of approximate thickness 1 to 5 mm 5 to 15 mm 15 to 25 mm 23. Two sheets of different material but same thickness can be welded by Changing the size of one electrode Time duration of current Adjusting the current Please fill in the comment box below. Time is Up! Time's up