Volume 4 Unit 4

Front 1

What is determined by the sharpness of the penetrometer holes?

Back 1

Detail sensitivity

Front 2

According to military standards, what is the radiographchic quality level if no specifications are available ?

Back 2

2-2T

Front 3

The penetrometer holes have sharp boundaries and give an abrupt change in metal ?

Back 3

Thickness

Front 4

When using lead screens where is the film placed?

Back 4

Between a pair of screens

Front 5

What determines the intensity of fluorescent light emitted by a fluorescent screen?

Back 5

Intensity of incident radiation

Front 6

What is the function of the diaphragm in radiography ?

Back 6

Confines the primary beam

Front 7

By applying geometric factors to your radiographic images, you are able to control distortion, sharpness, and degree of

Back 7

enlargement

Front 8

Which geometric factor is not controllable by the operator?

Back 8

Energy source size

Front 9

What is the name of the graph showing the relationship between material thickness, kilo voltage, and exposure?

Back 9

Technique Chart

Front 10

What aid is necessary to use a densitometer for making exposure corrections?

Back 10

To establish a starting density from which to correct

Front 11

The film characteristics curves are used to

Back 11

computer exposure corrections

Front 12

Film characteristic curves show that M film is

Back 12

slower than AA

Front 13

The area distance formula expresses what relationship?

Back 13

Area covered by the primary beam increases as source to object distance increases

Front 14

What type of defect is normally distinguished by a dark continuous jagged or straight line throughout its length on a radiograph?

Back 14

Crack

Front 15

Which technique can pinpoint the location of a crack?

Back 15

Triangulation

Front 16

Which radiographic defect appears as smooth, consistent, light density, areas that do not have a grainy or porus appearance ?

Back 16

Water in honey comb core

Front 17

During welder certification, what type of defect automatically results in an unacceptable weld if it exceeds certain limits ?

Back 17

Linear defects

Front 18

What items are required under the penetrometer when x-raying welding certification plates?

Back 18

Shim

Front 19

Which discontinuity appears as a dark irregular line offset from the centerline of the weldment ?

Back 19

Undercutting