WEL-160 Start Up Quiz notes

Consist of start up quizzes 03/24,

In the 2F position, the weld is placed on the upper side of a horizontal surface and against a vertical surface.

True

In the 2F position, the workpiece must be tilted at a 45° angle.

False

A slight upward torch angle helps prevent the weld pool from sagging in the 2F position.

True

Travel speed in 2F welding is usually slower than flat-position welding.

False

The recommended torch angle in 2F is typically 35°–45° from the horizontal plate.

True

Excessive angle torch in 2F MIG welding may cause undercut on the vertical plate.

True

In 2F MIG welding, a weave pattern is required on all fillet welds.

False

Gravity makes the molten metal drop onto the floor easily when welding 2F.

True

Proper torch manipulation in 2F helps achieve equal leg length on the fillet weld.

True

MIG welder settings for 2F may require slightly higher voltage compared to vertical-up welding.

True

What is the primary fuel gas used in oxyacetylene welding?

Acetylene

Which part of the oxyacetylene torch mixes the oxygen and acetylene before combustion?

Mixing chamber

What color is the hose used for acetylene in the United States?

red

A neutral flame is best described as

Equal amounts of oxygen and acetylene

What is the maximum recommended working pressure for acetylene gas?

15 psi

Acetylene becomes unstable and dangerous above 15 psi.

True

Oxygen cylinders should always be stored lying down.

False

A carburizing flame has a longer feather than a neutral flame.

True

Flashback arrestors help prevent flames from traveling back into the hoses.

True

Oxyacetylene welding can be used for cutting, welding, brazing, and heating metal.

True

A constant current (CC) power source is typically used for MIG welding.

False

MIG welding produces slag that must be chipped off after welding.

False

Increasing wire feed speed generally increases welding amperage.

True

MIG welding is well suited for welding thin materials with proper settings.

True

MIG welding can be used on both ferrous and non‑ferrous metals.

True