3641 e not reach the weld d need to be changed to a larger d

36-41

e, not reach the weld d. need to be changed to a larger diameter Enter the appropriate word() to complete the statement. 36 s the chief determinant or how effective a gas isso ae 37, The exact shielding gas required fora cerain job will vary depending upon welding conditions 38. Because of the constant potential power supply, the welding current will change as ine diwarce hoween and the work c measured by the diameter of circle War whe wwe eitu 39, The of a wire is were loosely laid on a at surface. they and their companies become. 40, The more cost efficient welders can be, the more 41. Explain how high gas flow rates can lead to contamination. 4 Explain what happens when spatter falls onto the shielding gas nozie, and how this can be minimizos

Solution

36. Density is the chief determinant of how effective a gas is for arc shielding

For lower density of gas, the flow rate will be higher.

37. The exact shielding gas flow rate required for a certain job will vary depending upon the welding conditions

Flow rate varies upon the welding conditions.

38. Because of constant potential power supply, the welding current will change as the distance between the contact tube and the work change.

39. The cast of the wire is measured by the diameter of the circle that the weld would make if it were loosely laid on a flat surface.

Cast is the natural curve of a wire.

40. The most cost efficient welder can be, the more competitive they and their companies become