Welding
Gas Welding & Bronze welding
41.What is the nozzle size required to bronze weld 10mm thick cast iron job?
A. 5
B. 7
C. 10
D. 13
42. State the suitable filler rod for bronze welding of cast iron
A. brass
B. silicon bronze
C. manganese bronze
D. super silicon cast iron
43. In bronze welding of cast iron, the base metal is heated upto a temperature of…
A. 300◦C
B. 650◦C
C. 1000◦C
D. 1300◦C
44. Name the filler rod used for fusion welding of copper
A. manganese bronze rod
B. copper silver alloy rod
C. silicon bronze rod
D. pure copper rod
45. The divergence allowance required for gas welding a 300mm long copper butt joint is…
A. 1 to 2 mm
B. 2 to 3 mm
C. 3 to 4 mm
D. 4 to 5 mm
46. The type of edge preparation done for gas welding a 4mm thick copper butt joint is…
A. single bevel
B. single V
C. double V
D. square
47. The nozzle size used for bronze welding of a 3.15 mm thick copper butt joint is…
A. 5
B. 7
C. 10
D. 13
48. State the filler rod size required for welding a butt joint on 3mm thick brass sheet
A. 1.6 mm
B. 2 mm
C. 2.5 mm
D. 3 mm
