ASNT LEVEL III BASIC MATERIALS AND PROCESES EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS) GRADED A+
•
1. Fracture is a type of material failure. Of the following which is another type of material
failure? - (ANSWER)Permanent deformation.
2. Which of the following statements best differentiates between a defect and a
discontinuity? - (ANSWER)Discontinuities can propagate and become defects.
3. Nondestructive testing is often differentiated from other measurements or inspection
techniques in that: - (ANSWER)NDT involves indirect tests related to some other quality
or characteristic of material.
4. What are the functions of NDT? - (ANSWER)Identifying and sorting of material.
5. Identifying of material properties.
6. Ensuring absence of faults or defects that could cause a part to fail.
7. An important basis for the success of fracture control design procedures is: -
(ANSWER)The need to ensure that unexpected flaws of some critical size are not present
when the component enters service.
8. If properly used, NDT can assist in fracture control by: - (ANSWER)Providing an
accurate evaluation of the number and type of discontinuities that exist in a material .
9. A statement that a particular experiment produced a 0.9 probability of detection with a
95% confidence level means that: - (ANSWER)There is a 5% probability that the
probability of detection is overstated.
10. Most solid metals and plastics that have reasonable strength at room temperature are
called: - (ANSWER)Engineering materials.
11. Material properties, as used in design, are most frequently determined by: -
(ANSWER)Materials testing.
12. Even at the early stages of product planning, NDT should be considered because: -
(ANSWER)The design of the part should permit easy access to critical areas for later
inspection. 你是我心中的那道光
13. which of the following material properties are of most concern if corrosion resistance is
essential? - (ANSWER)Chemical properties.
14. Which of the following is true relative to the comparison of the properties of aluminum-
based alloys and iron-based alloys? - (ANSWER)Iron can exist in several different
, ASNT LEVEL III BASIC MATERIALS AND PROCESES EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS) GRADED A+
•
crystalline structures and its properties can be controlled by heat treatment.
15. Tensile test are conducted on specimens from a newly developed alloy in order to
determine the ultimate tensile strength of the material. Such tests are referred to as: -
(ANSWER)Destructive tests.
16. A bar that is 2 in. long, 2 in. wide and 1 in. thick is subjected to a tensile load acting
along the lenght of the bar of 36000 lbs. What is the tensle stress within the bar? -
(ANSWER)18000 psi.
17. What is Point B on the Stress-Strain diagram where it first starts to curve? -
(ANSWER)Elastic limit.
18. Stress-Strain diagram, which of the following ranges indicates the affect of work
hardening, to its maximum, caused by plastic flow of the material during a tensile load? -
(ANSWER)Deformation rate to the ultimate strength
19. On the Stress-Strain diagram, the points represented by E and F would be closer together
if the material being tested were: - (ANSWER)Less ductile.
20. The modules of elasticity, or Young's modules, is related to the material's relative: -
(ANSWER)Stiffness and yield strength.
21. Which of the following materials is typically considered when the application only
requires high compressive strength? - (ANSWER)Cast iron.
22. A fatigue failure can often be prevented by using NDT to: - (ANSWER)Detect surface
discontinuities that could be stress risers.
23. Which of the following tests uses a pendulum to break a specimen that is notched and
supported on both ends, with the results of measuring energy absorption? -
(ANSWER)Charpy test.
24. What is a S-N curve? - (ANSWER)An endurance limit curve diagram.
你是我心中的那道光
25. Direct hardness test provide a measure of a material's ability to resist: -
(ANSWER)Surface and near-surface penetration.
26. Under ordinary usage, metals exist as: - (ANSWER)Crystalline solids.
27. The term body-centered cubic BCC, face-centered cubic FCC and hexagonal close-
QUESTIONS AND CORRECT DETAILED ANSWERS) GRADED A+
•
1. Fracture is a type of material failure. Of the following which is another type of material
failure? - (ANSWER)Permanent deformation.
2. Which of the following statements best differentiates between a defect and a
discontinuity? - (ANSWER)Discontinuities can propagate and become defects.
3. Nondestructive testing is often differentiated from other measurements or inspection
techniques in that: - (ANSWER)NDT involves indirect tests related to some other quality
or characteristic of material.
4. What are the functions of NDT? - (ANSWER)Identifying and sorting of material.
5. Identifying of material properties.
6. Ensuring absence of faults or defects that could cause a part to fail.
7. An important basis for the success of fracture control design procedures is: -
(ANSWER)The need to ensure that unexpected flaws of some critical size are not present
when the component enters service.
8. If properly used, NDT can assist in fracture control by: - (ANSWER)Providing an
accurate evaluation of the number and type of discontinuities that exist in a material .
9. A statement that a particular experiment produced a 0.9 probability of detection with a
95% confidence level means that: - (ANSWER)There is a 5% probability that the
probability of detection is overstated.
10. Most solid metals and plastics that have reasonable strength at room temperature are
called: - (ANSWER)Engineering materials.
11. Material properties, as used in design, are most frequently determined by: -
(ANSWER)Materials testing.
12. Even at the early stages of product planning, NDT should be considered because: -
(ANSWER)The design of the part should permit easy access to critical areas for later
inspection. 你是我心中的那道光
13. which of the following material properties are of most concern if corrosion resistance is
essential? - (ANSWER)Chemical properties.
14. Which of the following is true relative to the comparison of the properties of aluminum-
based alloys and iron-based alloys? - (ANSWER)Iron can exist in several different
, ASNT LEVEL III BASIC MATERIALS AND PROCESES EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS) GRADED A+
•
crystalline structures and its properties can be controlled by heat treatment.
15. Tensile test are conducted on specimens from a newly developed alloy in order to
determine the ultimate tensile strength of the material. Such tests are referred to as: -
(ANSWER)Destructive tests.
16. A bar that is 2 in. long, 2 in. wide and 1 in. thick is subjected to a tensile load acting
along the lenght of the bar of 36000 lbs. What is the tensle stress within the bar? -
(ANSWER)18000 psi.
17. What is Point B on the Stress-Strain diagram where it first starts to curve? -
(ANSWER)Elastic limit.
18. Stress-Strain diagram, which of the following ranges indicates the affect of work
hardening, to its maximum, caused by plastic flow of the material during a tensile load? -
(ANSWER)Deformation rate to the ultimate strength
19. On the Stress-Strain diagram, the points represented by E and F would be closer together
if the material being tested were: - (ANSWER)Less ductile.
20. The modules of elasticity, or Young's modules, is related to the material's relative: -
(ANSWER)Stiffness and yield strength.
21. Which of the following materials is typically considered when the application only
requires high compressive strength? - (ANSWER)Cast iron.
22. A fatigue failure can often be prevented by using NDT to: - (ANSWER)Detect surface
discontinuities that could be stress risers.
23. Which of the following tests uses a pendulum to break a specimen that is notched and
supported on both ends, with the results of measuring energy absorption? -
(ANSWER)Charpy test.
24. What is a S-N curve? - (ANSWER)An endurance limit curve diagram.
你是我心中的那道光
25. Direct hardness test provide a measure of a material's ability to resist: -
(ANSWER)Surface and near-surface penetration.
26. Under ordinary usage, metals exist as: - (ANSWER)Crystalline solids.
27. The term body-centered cubic BCC, face-centered cubic FCC and hexagonal close-
