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Practice Set 3
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1.
A halogen rich refrigerent gas, detectable by a Halogen Diode Leak Detector as it passes through a leak is generally referred to as?
2.
Products used in load carrying applications require more careful testing because:
3.
As per CP-189, the minimum required experience in the method for direct certification to Level II in UT is
4.
Which of the following statements is false?
5.
Which of the following is used to give preferential solidification of castings?
6.
Sources of Acoustic Emission (AE)
7.
As per SNT-TC-1A, certification is
8.
Which of the following is a crystal lattice that has nine atoms, eight at each corner and one centrally between them?
9.
Which of the following factors make it difficult to inpect ferromagnetic materials?
10.
Who should be responsible to assess whether of an individual should be qualified and certified to NDT jobs?
11.
The term used to describe the distance between a test encircling coil and a plate surface is?
12.
The lens of the eye focuses
13.
Large, soft pads made of lead or copper braid are used as contact surfaces on head stocks to?
14.
A person who receives a whole-body dose equivalent of 5 rems in one year:
15.
Flow bonding is a term used in the welding process which of the following would be classed as flow bonding?
16.
As per SNT-TC-1A (2006), should personnel that operate ultrasonic digital thickness measurement equipment be qualified and certified?
Yes, because SNT-TC-1A requires that all personnel performing NDT be qualified and certified.
No, because SNT-TC-1A does not cover that specific operation.
Only if required by industry standards, and specifications.
Whether any NDT personnel should be qualified and certified depends solely upon the needs of the employer and the requirements of the employer's customers or clientele.
17.
Composites may be made up of which of the following material combinations?
18.
Of the following sound waves modes one has multiple or varying wave velocities?
19.
The main advantage thermography over other contact temperature measurements methods is:
20.
The total energy losses occuring in all materials is called?
21.
Which weld process has a non-consumable electrode?
22.
The simple experiment where a stick in a glass of water appears disjointed at the water ?
23.
One of the factors that are primarily responsible for the loss in beam intensity is transmission losses. Transmission losses include?
24.
Total atmospheric pressure at sea level is 100 kPa. Find the partial pressure of helium (He), if helium concentrations is 4 ppm (by volume).
25.
Grain refinement for metals existing in one crystalline form can be accomplished by
26.
How much current would be required to circularly magnetise an article 10 inches - 25cm - long and 2 inches - 5cm - in diameter using 5.3 amps per mm diameter?
27.
Which of the following generators would provide the narrowest cone of X-ray radiation?
28.
Ultrasonic testing of material where the search unit is in direct contact with the material being tested may be
30.
Porlonged exposure to ultra violent radiation can cause
31.
A term used to define the phenomenon where, at very high frequencies, eddy current flow is restricted to an extremely thin outer layer of the conductor is:
32.
________ is composed of cavities or pores that form when the weld metal solidifies.
33.
What term is used to define the change of state directly from solid to gas?
34.
Which of the following will affect subject contrast?
35.
Flux leakage inspection is not likely to find which of the following defectv types?
36.
A fatigue failure can often be prevented by utilizing NDT to:
37.
How generally is a decarburised layer removed?
38.
Which of the following is true relative to the comparison of the properties of aluminum- based alloys and iron based alloys?
39.
Calculate the resistance of a circuit whose voltage is 20 volts and current is 12 amps: V = Ir = 20 x 12?
40.
Which extrusion process uses less pressure due to lower build ups of friction container and billet?
41.
The largest value of B/H ratio along the virgin hysteresis curve is called the
42.
For the written examinations, tables, graphs and charts may be used during ______ examinations.
43.
Impact forging is more commonly known as
44.
In practical usage, the recommendation of SNT-TC-1A
conform precisely to the requirements of most manufacturers who have NDT personnel.
conform precisely to the requirements of most independent testing laboratories.
usually require review and modification to satisfy the particulars needs of any user.
conform precisely to then requirements of most aircraft manufactures.
45.
AE sensors are
46.
Neutrons interact with the _____ of the atoms.
47.
A light source that can be used to study fast moving test objects by making them appear to move slowly is called
48.
Fatigue failure may initiate from
49.
Which of the following is not a form of case hardening?
50.
Which of the following properties of a material can be used to predict the deflection of a certain size beam under known loads?
52.
Acoustic energy propagates in different modes. Which of the following represents a mode?
53.
For steels hot working is performed at temperatures of
54.
The relative magnetic permeability of a diamagnetic material is
55.
According to SNT-TC-1A (2006), whether a Level I independently perform, evaluate, and sign for results of nondestructive tests with supervision and guidance from a Level II or III?
56.
The pupil of eye is
57.
Solution heat treatment requires which of the following?
58.
When is it possible to detect slightly sub-surface defects using penetrant testing?
59.
Which is the most efficient generator of ultrasonic wave?
60.
How might a weld arc be shielded from oxidation?
61.
Leak testing is used
62.
A sensor that can be used to measure dry bulb temperature in pressure change measurement test systems which consist of a bimetallic junction that produces an electromotive force (emf) that varies with temperature is known as a:
63.
When fluorescent penetrant inspection is performed, the penetrant materials are formulated to glow brightly and to give off light at a wavelength:
64.
As the wavelength of electromagnetic radiation increases the frequency will?
65.
Which of the following is considered to be a source of acoustic emission?
66.
As per CP-189 (2006), candidates who fail in Level I or II examination, must wait at least _____ days for reexamination without any additional training.
67.
According to SNT-TC-1A, an NDT Level III individual should be
be establishing and approving techniques
be capable of developing, qualifying, and approving procedures
be interpreting codes, standards, specifications, and procedures; and designating the particular NDT methods, techniques, and procedures to be used.
have general familiarity with other appropriate NDT methods
all of the above.
68.
Ferromagnetic materials may be inspected using the eddy current method while its permeability is
70.
Out gassing is more in
71.
A nickel rod placed in a coil carrying a current experiences a change in length as a function of the current through coil. This fact explains the basic principle of?
72.
A Bessemer converter is
73.
A short burst of alternating energy is called?
74.
To join two metals which of the following is essential?
75.
The recommendations of CP-189 (2006) are
76.
Which of the following modes of vibration exhibits the shortest wavelength at a given frequency and in a given material?
77.
As per CP-189 (2006), a trainee shall work under direction of an NDT
78.
Brittle fracture is most likely to occur
79.
Which of the following may be considered as a flat product of the steel mill?
80.
The recommendations of SNT-TC-1A are
81.
The letters N/C in machine work stand for
82.
Diamagnetic materials have a permeability _________.
83.
Which of the following could be considered a discontinuity?
84.
A process used to decrease hardness, increase ductility and occasionally improve machinability of high carbon steels is called
85.
Transducers used in ultrasonic testing exhibit which of the following effects?
86.
Austenitic stainless steel most typically contain
87.
As per SNT-TC-1A (2006), for near vision acuity the applicant should be able to read a minimum of _____ at minimum distance of 12 inches.
88.
A virtual leak is:
89.
The total emitted radiation by a black body can be obtained from:
90.
Dual purpose penetrants are viewed under what light?
91.
The amount of beam divergence from a crystal is primarily dependent on the
92.
A residual magnetic field is always?
93.
When a metal is very brittle which test is used to replace the tensile test?
94.
The carbon content of high carbon steel is
95.
Why is it advisable not to do inspection of a weld until complete cooling of weld after welding has finished?
96.
When a magnetised article is touched by another piece of magnetised material, whatbtype of indication could be induced onto the first item?
97.
Leaks can be tested by
98.
Infrared measurements for NDT are normally carried out in the wavelength region
99.
Which of the following is classified as permanent deformation?
100.
Which of the following would normally be considered the best fill factor when testing straight tubing with an encircling coil?
101.
Which of the following may be used as a cutting tool material?
102.
The tensile stress in a bar of 15 in. long and 3 in. wide and 2 in. thick subjected to a tensile load, acting along the length, of 30000 pounds will be equal to
103.
Two factors greatly affect the suitability of the target material in an X-ray generator are
104.
Cracking under the combined action of corrosion and static tensile stress is referred to as:
105.
As the development time increases:
the characteristic curve grows steeper and moves to the left toward the density axis.
the characteristic curve grows steeper and moves to the right toward the density axis.
the characteristic curve remains the same in shape but moves to the left toward the density axis.
there is little effect on the characteristic curve.
106.
Which of the following is an advantage of all the techniques of teh bubble test method?
107.
The illumination at a point on a surface in relation to the luminous intensity of the source and the distance between the source and the point varies directly with the intensity and:
108.
Chromium is a:
109.
Calculate the factor of safety if a material has a working stress of 15000 lbs per square inch and an Ultimate Tensile Stress (UTS) of 60000 lbs per square inch.
110.
Paintbush transducers are designed to?
111.
Internal forces acting upon imaginary planes cutting the body being loaded are
112.
That portion of the base metal affected by the welding process is known as
113.
A measured amount of undercut is detected that is allowable when refernced to an acceptable criteria. The uundercut is therefore decribed as?
114.
Splashed metal entrapped by molten metal that does not refuse is called
115.
Magnetic particle inspection is a means for detecting discontinuities at or near the surface in ??? materials?
117.
In modern manufacturing industries which of the following factors are considered?
118.
The spontaneous evolution of gas and vapor from materials in a vacuum as pressure is reduced is called:
119.
All of the following parts can be tested by the liquid penetrant method except:
120.
Which of the following is a surface hardening heat treatment process that does not change surface chemical composition?
121.
The intensity of fluorescence in relation to the intensity of the ultra violet radiation that excites it is
122.
Which of the following would normally be considered the least fill factor when testing straight tubing with an encircling coil?
123.
What is the approximate relationship between defect depth - D - and signal amplitude - A?
124.
The weld symbol µ is used to symbolise a
125.
Which of the following is not a factor that affects the inductance of an eddy current test coil?
126.
Good cleaning procedure will:
remove all contamination from the part and not leave any reside that may interfere with the inspection process
remove a small amount of metal from the surface of the part
should leave the part slightly fluorescent in order to identify any discontinuities
should etch the part slightly only if it is made from 4041 aluminum
127.
Which of the following is the least sensitive developer?
128.
Pressure is best defined as
129.
As per CP-189 (2006) the employer shall suspend an individual’s certification if
the vision examination interval exceeds 1 year
the individual has not performed the duties in the method(s) for which certified during any consecutive 12 month period
the individual’s performance is determined to be deficient in the required method or technique for specific documented reasons
A or B or C
130.
The most frequent cause for non relevant indications is?
131.
Which of the following metals is classed as a light metal?
132.
Identify the strain hardening mechanism which also increases flaw tolerance of the material: