What would happen if the secondary flame is suddenly moved away from the molten weld pool?Group of answer choices​The pool will cool off.​The molten pool will not have any change because it takes a while for it to cool and become solid.​The torch flame may go out from the sudden movement.​The molten pool would throw off a large number of sparks.

Which of the following is true of making a proper stop?Group of answer choicesYou should slightly taper down the molten weld pool by flashing the torch off.Flashing the torch off prevents the molten weld pool from solidifying.If the flame is removed too late from the molten weld pool, it will rapidly oxidize.Pockets of oxides add strength to the weld.

Heat flow from the flame to the burning fuel of a small pool fire is mostly due to …………….Convective heat transferConduction heat riseConduction heat transferConvective heat loss

Why should the end of the welding rod be kept inside the protective envelope of the flame?Group of answer choices​To keep the hot end from oxidizing if it is exposed to the air.​To keep it hot so it will melt into the weld pool faster.​It is easier to see there, and you are less likely to touch it to your hand, arm, or leg.​You can add the rod quicker if it is kept close to the weld pool.

Small molten weld pools are ____ large ones to drip.Group of answer choicesless likely thanas likely asmore likely thanmuch more likely than

A change in the number of sparks given off by the weld as it progresses can be used as an indication of ____.Group of answer choiceschanges in the weld temperaturechanges in the temperature of the atmospherechanges in the torch anglechanges in the flame size