Question 1

What does it mean when the electrode sticks to the base metal as you are trying to strike the arc?&#10;A) Voltage setting is too high.&#10;C) Current setting is too low.&#10;B) Current setting is too high.&#10;D) Voltage setting is too low.

Accepted Answer

When the electrode sticks to the base metal, it means that the current setting is too low. The proper current setting is necessary to heat the electrode tip and create an arc. If the current is too low, the electrode cannot create enough heat to melt the base metal and create an arc, leading to the electrode sticking to the metal.

Question 2

The ____ welds are used to build up a surface by running one or more stringers or weave beads across an unbroken surface.&#10;A) surfacing&#10;C) temporary&#10;B) permanent&#10;D) horizontal

Accepted Answer

Surfacing welds are used to build up a surface by running one or more stringers or weave beads across an unbroken surface. They are commonly used in applications where wear or corrosion resistance is required. Permanent welds are used to join two pieces of metal together, temporary welds are used for temporary purposes, and horizontal welds refer to the direction of the weld bead.

Question 3

A metal rod (core wire) that is coated with a flux material and is used to produce the arc is called a(n) ____.&#10;A) filler rod&#10;C) feeder rod&#10;B) electrode&#10;D) work clamp

Accepted Answer

An electrode is a metal rod (core wire) used as the conductor of electricity to create an arc between itself and the metal being welded. The coating on the electrode is a flux material that produces gas to shield the welding zone from impurities and oxides in the air. Choice A (filler rod) is a separate metal rod usually used in conjunction with welding to add additional material. Choice C (feeder rod) is not a common term in welding, and choice D (work clamp) is used to hold the metal in place during welding, but does not produce the arc.

Question 4

What does AC stand for?&#10;A) Arc current&#10;C) Alternating current&#10;B) Arc carrier&#10;D) Alternate cathode

Accepted Answer

AC stands for Alternating Current, which is a type of electrical current that periodically reverses direction, unlike DC (Direct Current) which flows in only one direction.

Question 5

Placing the negative on the electrode instead of the base metal is referred to as ____.&#10;A) AC&#10;C) DCEP&#10;B) DCEN&#10;D) reverse polarity

Accepted Answer

DCEN (Direct Current Electrode Negative) is the correct term for placing the negative on the electrode instead of the base metal.

Question 6

____ also is known as straight polarity.&#10;A) DCEP&#10;C) DCAC&#10;B) DCEN&#10;D) AC

Accepted Answer

DCEN (Direct current electrode negative) is also known as straight polarity. In DCEN, the electrode (negative) is connected to the negative terminal of the power source and the workpiece (positive) is connected to the positive terminal of the power source. This polarity is mainly used for welding thinner materials as it provides deeper penetration with a narrower bead.

Question 7

A(n) ____ is made by moving the puddle of molten metal in a forward direction with the electrode, as the arc is present.&#10;A) weld&#10;C) bead&#10;B) seam&#10;D) pool

Accepted Answer

The definition provided matches with the process of creating a bead in welding.

Question 8

____ is the result of more metal being removed from the base metal than is being replaced by the electrode.&#10;A) Ripple&#10;C) Sagging&#10;B) Underfill&#10;D) Undercut

Accepted Answer

Undercut is the result of more metal being removed from the base metal than is being replaced by the electrode, leading to a groove or depression in the surface of the metal.

Question 9

Which type of weld will be used when two pieces of metal are placed at right angles to each other?&#10;A) fillet weld&#10;C) surfacing weld&#10;B) groove weld&#10;D) plug weld

Accepted Answer

When two pieces of metal are placed at right angles to each other, a fillet weld is commonly used to join the two pieces. This type of weld is formed in the shape of a triangular fillet at the junction of the two pieces, and it provides a strong and durable bond between them. A groove weld would be used if the two pieces were in contact along a straight line or edge, a surfacing weld would be used to add material to the surface of a base metal, and a plug weld would be used to connect two overlapping pieces of metal by filling in a hole or slot.

Question 10

What type of weld would be used if the ends of the pieces that are to be welded are prepared to be square, beveled, U-shaped, or J-shaped?&#10;A) fillet weld&#10;C) surfacing weld&#10;B) groove weld&#10;D) plug weld

Accepted Answer

Groove welds are used when the ends of the pieces to be welded are prepared with square, beveled, U-shaped, or J-shaped grooves to allow for penetration and complete fusion between the pieces. Fillet welds are used when two pieces are joined in a lap, T, or corner joint and do not require any preparation of the ends. Surfacing welds are used to build up or repair a surface, and plug welds are used to join two pieces together by welding one piece through a hole in the other.

Question 11

____ occurs on a groove weld when the completed weld is below the original surface of the base metal.&#10;A) Ripple&#10;C) Sagging&#10;B) Underfill&#10;D) Undercut

Accepted Answer

The answer of ____ occurs on a groove weld when...

Question 12

What is the pressure within an electrical circuit called?&#10;A) voltage&#10;C) resistance&#10;B) amperage&#10;D) wattage

Accepted Answer

The answer of What is the pressure within an electrical...

Question 13

Which type of light is the most dangerous?&#10;A) ultraviolet&#10;C) white&#10;B) infrared&#10;D) flash

Accepted Answer

The answer of Which type of light is the most...

Question 14

The electron flow within an electrical circuit is known as ____.&#10;A) voltage&#10;C) resistance&#10;B) amperage&#10;D) wattage

Accepted Answer

The answer of The electron flow within an electrical circuit...

Question 15

What does it mean if there is an excess amount of spatter while arc welding?&#10;A) Voltage setting is too high.&#10;C) Current setting is too low.&#10;B) Current setting is too high.&#10;D) Voltage setting is too low.

Accepted Answer

The answer of What does it mean if there is...

Deck 28: ARC Welding