True False Indicate whether the statement is true or false 1 Base Metal is the metal to be welded or cut 2 A crater is the depression at the start of the weld 3 Under cut is when you cut a piece of metal to short 4 Arc length is the distance between the electrode and the metal being welded 5 You don t need to clean the metal after each weld if you turn the amperage up because the heat will remove all impurities 6 When grinding it is important to know where the sparks are being directed for safety reasons 7 Burns can be caused by ultraviolet light rays 8 When SMAW your helmet should be set between 3 6 9 Damage to your hearing caused by high sound levels is permanent and may not be detected until later in life 10 It is important to maintain a close arc length consistant travel speed and proper electrode angle to create a quality weld 11 When your weld is skinny its because your travel speed was to slow 12 Porosity is caused when the metal isnt cleaned properly arc lenght is to large the flux on the rod is missing and when the rod has moisture in it 13 Any physical movement while welding will cause an irregularity in the finished weld 14 When stick welding you can push or drag the weld 15 SMAW machines require a constant current power source 16 Duty Cycle is the operating time the welding machine can weld without overheating damaging the machine 17 Welding in the Flat position is the most difficult of the 4 basic positions 18 When welding in Horizontal Vertical or Overhead you must adjust the electrode angle Travel Speed and other variables to compensate for gravity