Welding CDE - How to Weld & Polarity

The proper length of arc may be judged by:

• All of the above
• The sound of the arc
• The apperance of the arc
• The apperence of the weld

For most arc welding jobs, the length of the arc should be:

• Equal to the rod width
• 1/4 inch
• Equal to the rod length
• Equal to the width of the base metal

What is the work angle?

• The angle between the electrode and the base metal when viewed from the end plane.
• The angle between the electrode and the vertical plane when viewed from the side.
• The position of the base metal being welded.
• The angle between the base metal and the welding table.

When welding pieces that are of unequal thickness:

• Point the electrode towards the thicker piece
• Maintain a short arc
• Use a long arc
• Increase the speed of travel

An E-7014 electrode can be used in:

• All positions
• Flat position only
• Flat and vertical positions only

When welding vertical up, you should have:

• A short arc
• A long arc
• The amperage set higher than normal
• None of the above answers are correct.

When selecting an electrode for a welding job it is best to:

• Choose a rod that is made of metal which is as similar to the metal as possible.
• Choose the most expensive rods avaliable.
• Choose the rod that is made of metal that is much lighter than the metal to be welded.
• Choose a rod that is made of metal which is much heavier than the metal to be welded.

The slag which remains on top of the weld will ___ the speed that the weld cools.

• Slow
• Increase

The two methods of striking an arc are:

• Scratching and tapping
• Scratching and itching
• Digging and striking
• Rubbing and scratching

Beveling is often used on very ___ metals.

• Thick

• Thin