Kirby's Ndi Ure's Vol. 4

Front 1

Excited electrons will surround a material in the form of an electron cloud commonly known as.......

Back 1

Thermionic Emission

Front 2

What is the positive terminal of an x-ray tube?

Back 2

Anode

Front 3

The type of process for when futons have energies of 100 kiloelectron-volt (keV) or less, and are readily absorbed by the electrons in the orbital shells of the atoms of the absorber is referred to as

Back 3

photoelectric absorption

Front 4

How much incident radiation should a subject being x-rayed absorb in order to achieve a high contrast?

Back 4

96-99 percent

Front 5

What has a very important affect upon the quality of an x-ray image?

Back 5

size of the focal spot

Front 6

To the radiation beam, an open crack appears as?

Back 6

a significant change in material thickness

Front 7

What can be used as a recording medium because their emulsions are sensitive to the quality and the energy of electromagnetic radiation over a wide spectral range?

Back 7

Films

Front 8

What makes up for the formation of latent changes by interactions to electromagnetic radiation?

Back 8

Silver bromide crystals

Front 9

Which class of radiographic film has a moderate signal-to-noise ratio?

Back 9

Class 3

Front 10

How is detail sensitivity of a radiographic image visually revealed?

Back 10

Pentrameter holes

Front 11

What is exposure of film from scatter radiation called?

Back 11

Fog

Front 12

Which if these materials CANNOT be used got thermoluminescent dosimeter (TLD) badges?

Back 12

Silicon Diode

Front 13

What should you do when a digital alarm dosimeter (DAD) is used by a different radiographer?

Back 13

Reset it to zero

Front 14

When the effects of a given absorbed dose decreases, the rate of exposure _______

Back 14

decreases

Front 15

Symptoms can be expected if the whole body is exposed to how much radiation?

Back 15

100 roentgens

Front 16

A radiation safety officer (RSO) is normally appointed by whom?

Back 16

Unit Commander

Front 17

What form will be completed for all overexposures, shielded, and unshielded inspections?

Back 17

AFTO Form 125, Industrial Radiography Utilization Log

Front 18

In the end area that is considered to be very high in radiation measured in radiation absorbed dosages (rad) is an area where and individual is.....

Back 18

3.3 feet from any source of radiation that could receive greater than 500 rads in one hour

Front 19

When unshielded radio graphic operations are conducted for vertical beam orientation you should erect a root barrier around the x-ray tube head at what distance?

Back 19

230 feet

Front 20

When should radiographers verify proper operation of radiography interlocks?

Back 20

Daily and prior to use

Front 21

When is the survey meter operational check performed?

Back 21

Every 14 days or as recommended by manufacturer, and prior to use

Front 22

In order for a safelight to meet or exceed minimum requirements the density change must be at least.....

Back 22

4 minutes and 45 seconds

Front 23

How do you go about completing an operational check on the Victoreen survey meter?

Back 23

Place a radioactive source material as close as possible to the white dot to maximize reading

Front 24

What type of safelight filter is the only model designated for use with industrial?

Back 24

6B or equivalent

Front 25

When a new batch of developer is added a strip of film should be checked after how many 14 x 17 inch pieces of film have been processed to compare the useful miss of the developer?

Back 25

50

Front 26

Which type of silver recovery system sends electric current to the silver bearing fixer and the silver is electronically deposited upon the cathode and can be refined?

Back 26

Electrolysis

Front 27

What type of casting defect maybe less or more dense then the matrix alloy and will appear as a darker or lighter indication?

Back 27

Inclusions

Front 28

What are often detectable in the direction of the thickness of a plate and will be parallel to the x-ray beam?

Back 28

Cracks in welds

Front 29

What type of welding defect does not properly fuse with the base metal and appears as a dark line oriented in the direction of the weld seam?

Back 29

Lack of fusion

Front 30

How does water in honeycomb cells usually appear on a radiograph?

Back 30

Smooth, consistent with a light density area and no grainy appearance

Front 31

What allows us to retrieve information electronically for easy and accurate manipulation or analysis by a computer?

Back 31

Digital imaging

Front 32

When the dynamic range is greater, the....

Back 32

higher the contrast and color/greyscale bit depth

Front 33

How should you care for image plates (IP)?

Back 33

Wear cotton gloves to aid in keeping clean

Front 34

Which of these is NOT used to store digital radiographs?

Back 34

Share drive

Front 35

What is defined as a digital image by the pixel it represents?

Back 35

Brightness resolution

Front 36

What type of pixel can display 256 colors or greyscale levels at most?

Back 36

8 bit

Front 37

Who will approve all laser pointers prior to use?

Back 37

Bioenvironmental Engineering

Front 38

Computed Radiography (CR) process controls are split into what four tests?

Back 38

Display monitor, system, image plate, and EPS tests

Front 39

What acceptable criteria are you looking for during the display monitor process control test?

Back 39

Verify the high and low brightness of vertical/horizontal lines at each corner

Front 40

During evaluation of the special resolution evaluation, how far away from the display monitor shall operators be positioned

Back 40

12-18 inches

Front 41

Apart from the magnification setting, what is the only item that may be adjusted during the laser jitter evaluation?

Back 41

Brightness

Front 42

How is wear metal concentration measured?

Back 42

Parts per million

Front 43

Sudden failures not proceeded by characteristic where metal generation, such as fatigue failure, is.....

Back 43

Undetectable, and known as a catastrophic failure

Front 44

The concentration of metals in fluid samples is measured by the

Back 44

Amount of light absorbed or emitted by the excited sample

Front 45

Spectroscopy relies on the....

Back 45

detection of persistent lines in a spectrum

Front 46

Which atomic emission group takes the lights emitted during excitation and isolates or breaks it down into its spectral wavelengths for monitoring?

Back 46

Optical processing

Front 47

What information is NOT provided in a scanning electron microscope/energy dispersive X-Ray (SEM/EDX) report?

Back 47

A three dimensional image

Front 48

What process includes the ability to generate three-dimensional images of metal particles?

Back 48

Scanning electron microscope/energy dispersive X-Ray (SEM/EDX).

Front 49

SEM/EDX technology is currently only used in NDI laboratories that support which aircraft?

Back 49

F-16 and U-2

Front 50

Which warning level indicates that there is a significant amount of material detected and troubleshooting must be initiated?

Back 50

Level 2

Front 51

How should temperature and humidity be controlled in the JOAP labs?

Back 51

75 +/- 10 F with 20% to 60% humidity

Front 52

The D3 standard contains approximately the same weight of which three elements?

Back 52

Boron, Molybdenum, and Zinc

Front 53

Which diagnostic check is used to assure that the spectrometer has reached electronic stability?

Back 53

the dark current electronic stability test

Front 54

Ultimately, the responsibility to decide what action to take in regard to any recommendation from the JOAP laboratory rests with the ______

Back 54

customer

Front 55

How often do you back up all assigned spectrometer?

Back 55

Monthly

Front 56

What monthly correlation score must labs maintain to keep labs certified?

Back 56

80 percent or above

Front 57

Which is not a reason for a lab to to become uncertified?

Back 57

Upon direction of the JOAP lab supervisor

Front 58

Once a spectrometer in reported maintenance (RM) status has been repaired, you may analyze up to...

Back 58

two months of overdue correlation samples, with up to one overdue sample set for each workday

Front 59

How many analysis burns are completed for the warm-up?

Back 59

three or four

Front 60

If your daily check fails, you should complete...

Back 60

a full standardization and then another daily standardization check

Front 61

What will you need to do every time a new batch and/or lot number of electrodes is used?

Back 61

Electrode offset procedure

Front 62

How long will NDI laboratories keep a Department of Defense DD Form 2026 on file?

Back 62

90 days

Front 63

Which oil analysis program record is kept on file for 12 months?

Back 63

Historical data form

Front 64

The hours of flight since oil change time is normally critical only during the...

Back 64

first 10-15 hours

Front 65

Which lab code recommends a "resample after *** hours; do not change oil"?

Back 65

Code C

Front 66

What is relatively insensitive to test object bending or deformation due to the applied stress, but is still highly sensitive to local defect deformation?

Back 66

Shearography

Front 67

When interpreting a image in shearography, what are you doing if you move a defect to the center of the field of view (FOV) and retest the part?

Back 67

Precisely measuring an indication

Front 68

Which of these does not act as an active thermographic excitation source?

Back 68

Eddy current initiators

Front 69

Which material is tested by cooling instead of heating the surface in thermal shearography?

Back 69

Kevlar

Front 70

What is the maximum possible scan speed in square feet per hour when using a mobile automated scanner system (MAUSS)?

Back 70

100