WELDING QUIZ

1. Plastic Welding procedure is used in (a) Forge welding (b) Arc welding. (c) Friction welding (d) MIG welding

2. What welding is used to join dissimilar metals? (a) Gas welding (b) MIG welding (c) Arc welding (d) Friction welding (e) None of these

3. What welding is suitable for stainless steel? (a) MIG welding (b) TIG welding (c) Plasma arc welding (d) Metal arc welding (e) None of these

4. The maximum temperature of neutral flame is (a) 1500 C (b) 2300 C (c) 3200 C (d) 4000 C

5. TIG welding is one of the ….. (a) Resistance welding (b) Gas welding (c) Solid state welding (d) Arc welding

6. OXY-ACETYLENE welding process is suitable for joining metal sheets and plates having thickness of (a) 2 to 15 mm (b) 2 to 30 mm (c) 2 to 40 mm (d) 2 to 50 mm 7. Projection welding is a modification of

(a) Butt welding (b) Spot welding (c) Seam welding (d) Percussion welding

8. Porosity is the formation of blow holes due to the presence of (a) Nonmetallic substance in the metal (b) Nonuniform melting of the electrode coating (c) Moisture in the flux (d) Both (a) & (b)

9. The maximum temperature of plasma arc welding is (a) 3,600 C (b) 11,000 C (c) 15,000 C (d) 30,000 C

10. what welding is used in this field like aerospace, airplane (a) TIG welding (b) Electron beam welding (c) Laser beam welding (d) Thermit welding (e) None of these

11. Nonferrous metals can also be successfully welded in (a) Plasma arc welding (b) Atomic hydrogen arc welding (c) Flux core arc welding (d) Electro slag welding (e) None of these

12. which welding process, contact techniques & impact techniques are used…? (a) Diffusion welding (b) Explosive welding (c) Friction welding (d) Ultrasonic welding (e) None of these

13. ……… is the standard color for acetylene (a) Green (b) Black (c) Red (d) None of these