Oxidising flame
Carburising flame
Neutral flame
None of the above
AC main supply into a DC welding supply
AC main supply into an AC welding supply
DC main supply into an AC welding supply
DC main supply into DC welding supply
40-60 amps
50-80 amps
90-130 amps
140-170 amps
feed of a drill
cutting speed of a drill
depth of a drill
speed of a drill
they help to remove the reamer easily
they are easy to manufacture
they can reduce chattering
they help to cut metal gradually