Question 1

The shear strength may be expressed in pounds or ____ per spot.

Accepted Answer

The unit of force in the SI system is newtons, which are used for expressing shear strength as well. Pounds and slugs are units of force and mass, respectively, in the imperial system, and grams are a unit of mass in the metric system. Vectors are not a unit of measure, but rather a mathematical concept used to represent quantities with both magnitude and direction.

Question 2

The dimension for the center-to-center spacing (pitch) of spot welds is shown to the ____ of the weld symbol.

Accepted Answer

The dimension for the center-to-center spacing (pitch) of spot welds is shown to the right of the weld symbol, according to standard welding symbol notation.

Question 3

The size of a spot weld is measured in ____________________ of an inch, with or without inch marks.

Accepted Answer

fractions

Question 4

In cross section, the spot weld appears to be ____________________.

Accepted Answer

The answer of In cross section, the spot weld appears...

Question 5

When the spot-weld symbol is centered on the reference line, the dimension can be placed on either side of the reference line.

Accepted Answer

When the spot-weld symbol is centered on the reference line, it indicates that the spot-weld is to be located at the intersection of the reference line and the centerline of the spot-weld symbol. In this case, the dimension can be placed on either side of the reference line.

Question 6

A spot weld symbol is similar to the weld-all-around symbol except that it is not centered on the reference line.

Accepted Answer

A spot weld symbol is not similar to the weld-all-around symbol; the spot weld symbol specifically indicates a type of weld (spot welding), while the weld-all-around symbol, which is a circle at the intersection of the arrow and the reference line, indicates that welding is to be performed all around a joint.

Question 7

In spot-welding, ____ are used when the drawing dimensions are in metric.

Accepted Answer

In spot-welding, newtons are used as the unit of force when the drawing dimensions are in metric, aligning with the International System of Units (SI).

Question 8

When the spot weld is used, the tail is optional.

Accepted Answer

In spot welding, a tail is not typically used as it involves welding at specific points rather than creating a continuous seam that would require a tail.

Question 9

If the strength of the weld is to be given rather than its size, the value is placed to the ____ of the spot-weld symbol.

Accepted Answer

The strength of the weld is indicated to the left of the spot-weld symbol in welding symbols.

Question 10

A machine finish may be specified as flat without a need for it to be flush by adding a note in the tail "____________________ flat."

Accepted Answer

The answer of A machine finish may be specified as...

Question 11

The ____ symbol is placed at the break in the reference line.

Accepted Answer

The weld-all-around symbol, which is a circle, is placed at the break in the reference line to indicate that the weld extends around the entire joint.

Question 12

The size of a spot weld represents the ____ of the weld at the faying (joining) surfaces.

Accepted Answer

The size of a spot weld is typically described by its diameter, which represents the width or spread of the weld at the faying surfaces. The other options listed (radius, circumference, area) do not accurately describe the size of a spot weld.

Question 13

Dimensions applied to the spot-weld symbol are shown on the same side of the reference line as the symbol, or on either side when there is no arrow side or other side significance for the symbol.

Accepted Answer

When dimensioning a spot-weld symbol, the dimensions are shown on the same side of the reference line as the symbol, or on either side if there is no significance to the arrow side or other side. This is to ensure that the dimensions are clear and easily readable for the person reading the drawing.

Question 14

The spot-weld symbol is located ____________________ to the reference line when it has an arrow side or other side significance.

Accepted Answer

The answer of The spot-weld symbol is located ____________________ to...

Question 15

The ____ or flush-contour symbol and method of finish may be added to the spot-weld symbol when the exposed surface of either member of the spot-welded joint is to be made flush.

Accepted Answer

The correct term is "flat" or flush-contour symbol, which indicates that the exposed surface of either member of the spot-welded joint is to be made flush.

Question 16

A(n) ____ weld is made between or on overlapping members of a joint.

Accepted Answer

A spot weld is specifically designed for joining overlapping members by making welds at various points, which is common in sheet metal processes.

Question 17

The spot-weld symbol is centered on the reference line when there is no arrow side or other side significance.

Accepted Answer

When there is no arrow side or other side significance, the spot-weld symbol is centered on the reference line.

Question 18

The size of a spot weld is shown to the ____ of the weld symbol.

Accepted Answer

The size of a spot weld is typically shown to the left of the weld symbol in welding diagrams.

Question 19

The ____________________ refers to the center-to-center distance between the spot welds.

Accepted Answer

The answer of The ____________________ refers to the center-to-center distance...

Question 20

____ spot welds include one or more pieces inserted between the two outer members.

Accepted Answer

Multiple-joint spot welds are characterized by having one or more pieces inserted between the two outer members, differentiating them from other types of spot welds which typically involve direct contact between the pieces being welded.

Quiz 18: Spot Welds