Question 1

The Bridge Cam Gauge (Cambridge Gauge) can measure all of the following EXCEPT:

Accepted Answer

The Bridge Cam gauge measures external features (undercut, leg, throat, convexity, misalignment). It cannot measure pore diameter (use V-WAC or comparator).

Question 2

When using a standard 'Go/No-Go' fillet weld gauge to check a convex fillet weld, you are checking the:

Accepted Answer

For a convex weld, the leg size determines the weld size. The laser-cut notches on a Go/No-Go gauge check if the leg length meets the specified dimension.

Question 3

The V-WAC gauge is primarily used to measure:

Accepted Answer

The V-WAC (Visual Weld Acceptance Criteria) gauge has a probe for measuring undercut depth and comparison holes for porosity size.

Question 4

When using the 'Hi-Lo' gauge, you are measuring:

Accepted Answer

The Hi-Lo gauge fits inside the pipe gap to measure the step (misalignment) between the inner walls.

Question 5

To measure the throat of a concave fillet weld with a fillet weld gauge, you use:

Accepted Answer

Fillet gauges have a projection that reaches into the center of the concave face to verify if the actual throat thickness is sufficient.

Question 6

A Micrometer is typically used to measure:

Accepted Answer

Micrometers provide precise measurements (0.001 inch) of material thickness or wire diameter.

Question 7

On a Bridge Cam gauge, the scale used to measure undercut is graduated in:

Accepted Answer

The undercut scale on a standard Bridge Cam gauge is typically graduated in 1/32 inch (or 0.5mm) increments.

Question 8

When measuring the convexity of a fillet weld, the measurement is taken from:

Accepted Answer

Convexity is the maximum distance from the face of the weld perpendicular to a line joining the weld toes.

Question 9

If a fillet weld has unequal legs (e.g., 1/4 x 1/2), how is the size determined by a gauge?

Accepted Answer

Unequal leg fillets require verifying both dimensions against the drawing requirements, typically using a ruler or slide gauge rather than a fixed go/no-go gauge.

Question 10

A 'Skew-T' fillet weld gauge is used for:

Accepted Answer

Skewed T-joints require a special gauge (or calculation) because the angle distorts the relationship between leg and throat.

Question 11

To verify the root opening of a groove weld prior to welding, the inspector commonly uses:

Accepted Answer

Tapered leaf gauges (or placing a known drill bit shank in the gap) provide an accurate measurement of the root opening.

Question 12

The 'Automatic Weld Size Gauge' (often fan-shaped) allows measurement of:

Accepted Answer

The fan-shaped gauge (AWS type) has blades for different sizes, with curves to check both convex leg and concave throat.

Question 13

Using a Bridge Cam gauge, you measure the reinforcement of a butt weld to be 1/8 inch. The code maximum is 1/8 inch. The weld is:

Accepted Answer

If the measurement is equal to the limit (1/8 inch), it is acceptable. Rejection occurs only if it exceeds the limit.

Question 14

When measuring the bevel angle of a pipe preparation, which gauge is most appropriate?

Accepted Answer

The Bridge Cam gauge includes a rotating scale for measuring preparation angles (0-60 degrees).

Question 15

A welder's tape measure (ruler) should generally be graduated in increments of:

Accepted Answer

Precision in layout and fit-up typically requires 1/16 or 1/32 inch resolution.

Question 16

A 'Gap-A-Let' ring is used to:

Accepted Answer

Gap-A-Let rings are consumable spacers dropped into socket fittings to guarantee the code-required 1/16 inch gap for thermal expansion.

Question 17

When measuring the diameter of scattered porosity, the inspector should:

Accepted Answer

The V-WAC gauge has calibrated holes (1/32, 1/16, 1/8) to compare against surface porosity for quick Pass/Fail decisions.

Question 18

The term 'calibrated' regarding inspection tools means:

Accepted Answer

Calibration ensures the tool's readings are accurate within a specified tolerance relative to a master standard.

Question 19

If a fillet weld is convex, the leg size is measured:

Accepted Answer

For convex fillets, leg size is the distance from the joint root to the toe.

Question 20

A 'surface comparator' is used to evaluate:

Accepted Answer

Comparators provide touch/visual reference samples for determining if a weld face is too rough.

Question 21

When measuring the length of an intermittent weld segment, you measure:

Accepted Answer

Weld length includes the craters if they are filled to the full cross-section size.

Question 22

The depth of a 'crater pit' is measured using:

Accepted Answer

The pointed probe on multi-purpose gauges (Bridge Cam/V-WAC) is designed to enter pits and undercut to measure depth.

Question 23

Digital calipers are useful for measuring:

Accepted Answer

Calipers provide accurate measurements of fit-up variables like root face (land) and material thickness.

Question 24

When verifying the interpass temperature with a contact pyrometer, the reading should be taken:

Accepted Answer

AWS codes typically specify checking preheat/interpass temperature at a distance equal to the plate thickness or 3 inches (whichever is greater), but often practically 1 inch for checking interpass max limits.

Question 25

Linear misalignment (High-Low) is measured using:

Accepted Answer

Misalignment can be measured with a dedicated Hi-Lo gauge (internal) or by placing a straight edge across the joint and measuring the offset (external).

Measurement & Gauges Practice Questions

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