Am Ch 6

Front 1

According to NA-01-1A-16, who can perform NDI inspections?

Back 1

Certified personnel only.

Front 2

What type of examination must a candidate receive before selection as an NDI inspector and annually there after?

Back 2

Eye exam.

Front 3

How often must active NDI technicians recertify?

Back 3

3 years.

Front 4

What is the minimum amount of experience required from a technician who is currently certified and engaged in NDI in order to train and certify NDI operators?

Back 4

3 years.

Front 5

How often must an NDI technician or operator perform the methods in which they are certified?

Back 5

Two times a month.

Front 6

How long must a NDI operator maintain proficiency without being required to update training for recertification?

Back 6

6 months.

Front 7

The original copy of the NDI certification is held by whom?

Back 7

The individual.

Front 8

Who verifies the entries in the work center supervisor's Technician/Operator work record?

Back 8

Quality Assurance (QA).

Front 9

What command has cognizance over the NDI program?

Back 9

Naval Air Systems Command (NAVAIR).

Front 10

What command provides training for all NADEPs?

Back 10

Naval Air Systems Command (NAVAIR).

Front 11

Who is responsible for monitoring the NDI program in activities under their cognizance?

Back 11

Aircraft Controlling Custodians (ACC).

Front 12

What activity is responsible for ensuring compliance with qualification requirements and enforcing the Industrial Radiation Safety Program (RASP) requirements in accordance with the RASP manual?

Back 12

Intermediate Maintenance Activity (IMA).

Front 13

What division is responsible for monitoring the organization’s NDI training program?

Back 13

Quality Assurance (QA).

Front 14

What activity is responsible for requesting NDI inspection on aircraft?

Back 14

Organizational Maintenance Activity (OMA).

Front 15

For a magnetic particle inspection to be performed, a part must be made of alloys that contain a high percentage of what material?

Back 15

Iron.

Front 16

When conducting a magnetic particle inspection, the magnetic field is interrupted by what factor?

Back 16

Discontinuity.

Front 17

Which method of magnetization is used to find radial discontinuities around the edges of holes and detect longitudinal discontinuities?

Back 17

Circular magnetization.

Front 18

When you inspect hollow or tubelike parts, it is important to inspect what surface?

Back 18

Inside surface.

Front 19

What type of current should be used for the detection of surface discontinuities?

Back 19

Alternating current (ac).

Front 20

To detect subsurface discontinuities, you would use direct current with what type of magnetic particle inspection?

Back 20

Wet magnetic particle method.

Front 21

The particles that are used in magnetic particle inspections have what two characteristics?

Back 21

High permeability and low retentivity.

Front 22

The smallest particles are more easily attracted to and held by what type of discontinuities?

Back 22

Very fine discontinuities.

Front 23

Fluorescent particles are widely used in wet baths and are easily seen on dark backgrounds when what type of light is used?

Back 23

Black light.

Front 24

What method of inspection is used to detect flaws in areas that are not accessible or favorably oriented for use by other test methods?

Back 24

Radiation (X-Ray).

Front 25

X-rays can be a health hazard when improperly used because of what factor?

Back 25

They produce radiation.

Front 26

What method of inspection uses vibration or sound waves?

Back 26

Ultrasonic inspection.

Front 27

What inspection method is used to detect discontinuities parallel to the test surface on materials one-half inch thick or greater?

Back 27

Straight-beam.

Front 28

What is the best inspection method to use around fastener holes, cylindrical components, and welds?

Back 28

Angle-beam.

Front 29

What ultrasonic method is used to detect surface cracks and subsurface discontinuities in field activities?

Back 29

Surface wave.

Front 30

Electric currents that are induced in a conductor of electricity by a reaction with a magnetic field are known as what type of currents?

Back 30

Eddy currents.

Front 31

What type of coil has the ability to better define the exact location of discontinuities?

Back 31

Surface coil.

Front 32

A simple, inexpensive, and reliable method for detecting discontinuities that are open to the surface is known as what type of inspection?

Back 32

Dye penetrant.

Front 33

Welding training and testing are conducted at what facilities?

Back 33

Naval Aviation Depot (NADEP).

Front 34

What is the recertification interval for IMA-level aeronautical equipment welders if proficiency is maintained?

Back 34

Annually.

Front 35

If you fail the first test weld(s), what amount of time do you have to submit the retest welds after notification of failure?

Back 35

30 days.

Front 36

What are the two main purposes of the welding torch?

Back 36

To properly mix the gasses and direct the flame against the part to be welded.

Front 37

What is the temperature range of acetylene when mixed with oxygen?

Back 37

5,700 to 6,300°F.

Front 38

What are the three main characteristics of oxygen?

Back 38

Odorless, colorless, and slightly heavier than air.

Front 39

If an oxygen bottle has a white band around it, what type of oxygen does it contain?

Back 39

Breathing oxygen.

Front 40

What pressure does the low pressure (0 to 500 psi) gauge on a single-stage regulator indicate?

Back 40

Working pressure.

Front 41

Acetylene is colorless, but has what feature that makes it easily detected?

Back 41

A distinct odor.

Front 42

At what pressure does acetylene become self-explosive?

Back 42

29.4 psi.

Front 43

What is another name for a low-pressure welding torch?

Back 43

Injector.

Front 44

What color is the acetylene hose on an oxyacetylene welding system?

Back 44

Red.

Front 45

Describe the thread fittings for the hose hookups for an oxyacetylene welding system.

Back 45

All threaded fittings used for the acetylene hookup are left-handed threads, and
all threaded fittings for oxygen hookup are right-handed threads.

Front 46

Regardless of the shade of your welding goggle's lens, they should be protected by what type of material?

Back 46

Clear cover glass.

Front 47

Bronze and aluminum welding rods are examples of what type of welding rods?

Back 47

Nonferrous.

Front 48

What type of flame has three distinct zones and is used to weld nickel alloys?

Back 48

Carburizing flame.

Front 49

What type of flame has a small, white pointed cone in the inner zone with a purple tinge and is used to fuse brass and bronze?

Back 49

Oxidizing flame.

Front 50

An overheated welding tip, accompanied by a popping sound, indicates what action has occurred?

Back 50

Backfire.

Front 51

Define the term “flashback” as it applies to a welding torch.

Back 51

Flashback is the burning of gases within the torch.

Front 52

When the torch is held properly, the tip should be in line with what structure?

Back 52

The joint to be welded.

Front 53

What welding technique is the best method for welding lighter metals?

Back 53

Forehand method.

Front 54

Tee and lap joints are classified as what type of welds?

Back 54

Fillet welds.

Front 55

Corner and butt joints are classified as what type of welds?

Back 55

Groove welds.

Front 56

What type of joint is formed when two pieces of metal are placed edge-to-edge with no overlap and welded together?

Back 56

Butt joint.

Front 57

What type of joint is formed when two pieces of metal are welded approximately perpendicular to each other?

Back 57

Tee joint.

Front 58

What type of joint is formed by welding two overlapping metals together?

Back 58

Lap joint.

Front 59

What type of joint is formed when two or more parallel or nearly parallel pieces of metal are welded together?

Back 59

Edge joint.

Front 60

What type of electrode is used in GTA welding because of its ability to resist high temperatures?

Back 60

Tungsten alloy.

Front 61

DC reverse polarity in a welding machine causes a greater concentration of heat in what location?

Back 61

At the electrode.

Front 62

Directional and distributional control of the shielding gas is provided by what component?

Back 62

Gas cups.

Front 63

What is the most common type of shielding gas used in the tungsten-arc welding process?

Back 63

Argon.

Front 64

When striking an arc in gas tungsten arc welding (GTAW), you should hold the electrode what distance above the work piece?

Back 64

1/8 inch.

Front 65

The process that uses a consumable wire electrode is known as what type of welding?

Back 65

Gas Metal Arc (GMA).

Front 66

What determines the melting rate of the filler wire?

Back 66

Current level.

Front 67

When you use the gas tungsten arc welding (GTAW) method to weld aluminum, what is the preferred shielding gas?

Back 67

Argon.

Front 68

When you use the GMA welding method, why should you pull the gun back quickly when contact is made between the electrode and the work piece?

Back 68

To prevent sticking.

Front 69

If you hear a loud crackling sound while you are GMA welding, what direction should you move the wire-feed speed dial to correct this?

Back 69

Counterclockwise.

Front 70

When using GMA welding equipment, where should you attach the ground connection?

Back 70

Ensure it is firmly attached to the work piece.

Front 71

When GMA welding equipment is not in use, what should you do to the power source?

Back 71

Completely disconnect it.

Front 72

What is the only metal that cannot be hardened by heat-treatment?

Back 72

Pure metal.

Front 73

Uneven heating of metal often causes what actions to occur?

Back 73

Distortion and cracking.

Front 74

The slow heating of metal ensures what condition?

Back 74

Uniformity.

Front 75

The heating rate for hardened tools and parts should be slower than metals that are in what condition?

Back 75

Not in a stressed condition.

Front 76

What is the process of holding a metal at a temperature until it is heated throughout and changes have had time to take place?

Back 76

Soaking.

Front 77

How can you reduce the distortion and cracking of metal?

Back 77

Preheating.

Front 78

The process for rapidly cooling heated metal is known by what term?

Back 78

Quenching.

Front 79

Alloy steels are generally hardened by cooling with what substance?

Back 79

Oil.

Front 80

The form of heat-treatment used to reduce residual stresses, induce softness, and alter ductility is known by what term?

Back 80

Annealing.

Front 81

The process in which an iron-based metal is allowed to cool at room temperature, in still air, after being heated to approximately 100°F is known by what term?

Back 81

Normalizing.

Front 82

The process of quenching a metal after it is heated to a temperature slightly above the critical temperature is known by what term?

Back 82

Hardening.

Front 83

What is the process of producing a hard case over a tough core known as?

Back 83

Case hardening.

Front 84

The process by which steel is heated to just below critical and held there for a period of time, and then cooled with oil, water, or brine is known by what term?

Back 84

Tempering.

Front 85

The process of hardening steel by introducing carbon to the heated metal is known by what term?

Back 85

Carburizing.

Front 86

The process of hardening alloy steel by holding it at temperatures below the critical point in anhydrous ammonia is known by what term?

Back 86

Nitriding.

Front 87

The carbon in steel, which exists as particles of iron carbide scattered throughout the iron mixture, is known by what term?

Back 87

Ferrite.

Front 88

If the cooling is slow, the carbon particles are relatively course and few. In what condition will this leave the steel?

Back 88

A soft condition.

Front 89

Before steel can be hardened completely, it must be heated to a certain point, before it is rapidly quenched. What is this point called?

Back 89

Upper critical point.

Front 90

If you don't have an instrument to determine the temperature of steel being heated, you can judge it by what factor?

Back 90

Its color.

Front 91

What term describes an aluminum alloy with a protective coating of aluminum?

Back 91

Alclad.

Front 92

What increases artificially aged alloys' resistance to corrosion?

Back 92

They are slightly overaged.

Front 93

What is the recommended time interval between removal from the heat and immersion during the quenching process?

Back 93

10 seconds or less.

Front 94

Small aluminum parts are normally quenched in what substance to ensure good resistance to corrosion?

Back 94

Cold water.

Front 95

What quenching method is used to quench large forgings to prevent cracking and minimize distortions?

Back 95

Hot water.

Front 96

The process of removing the effects of heat-treatment in alloys is referred to by what term?

Back 96

Annealing.

Front 97

It takes a 2-hour soak at 750° to 800°F, followed by a maximum cooling rate of 50° per hour to 500°F to remove the effects of a partial or full heat-treatment and obtain what condition?

Back 97

Maximum softness.