NDT Exam One MT with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
Ferromagnetic material is:
a. strongly attracted by a magnet.
b. not highly saturated by magnetic fields.
c. a material with a 0 permeability measurement.
d. not capable of being magnetized. ✔Correct Answer-a. strongly attracted by a magnet.
The permeability of a material describes:
a. the ease with which it can be magnetized.
b. the depth of the magnetic field in the part.
c. the length of time required to demagnetize it.
d. the ability to retain the magnetic field. ✔Correct Answer-a. the ease with which it can be
magnetized.
The retentivity of a material describes:
a. the ease with which it can be magnetized.
b. the depth of the magnetic field in the part.
c. the length of time required to demagnetize it.
d. the ability to retain the magnetic field. ✔Correct Answer-d. the ability to retain the
magnetic field.
The unit usually used to denote flux density is:
a. gauss.
b. henry.
c. farad.
d. ampere. ✔Correct Answer-a. gauss.
Magnetic flux lines that are parallel to a discontinuity produce:
a. strong indications.
b. weak indications.
c. no indications.
d. fuzzy indications. ✔Correct Answer-c. no indications.
A part is adaptable to magnetic particle inspection if:
a. it is attached to an electrostatic field.
b. the material is ferromagnetic.
c. the material is non-ferrous.
d. the material is an electric conductor. ✔Correct Answer-b. the material is ferromagnetic.
, What rule describes the direction of current flow (+ to -) when lines of magnetic force surround
a conductor?
a. left-hand rule
b. right-hand rule
c. flux rule
d. reluctance rule ✔Correct Answer-b. right-hand rule
The proper number of ampere-turns for a given test specimen being examined by longitudinal
magnetism is determined by:
a. its length and diameter.
b. the material.
c. the diameter and the material.
d. its diameter. ✔Correct Answer-a. its length and diameter.
A circular field may be induced into a specimen by:
a. placing the part in an energized coil.
b. passing current directly through the part.
c. passing a magnetic field through the part.
d. placing the part in a north-south orientation. ✔Correct Answer-b. passing current directly
through the part.
An electrical yoke produces:
a. a longitudinal field.
b. a circular field.
c. alternating fields.
d. a swinging field. ✔Correct Answer-a. a longitudinal field.
An energized coil around the part produces:
a. a circular field.
b. a longitudinal field.
c. an intermittent field.
d. a field dependent on the type of current applied. ✔Correct Answer-b. a longitudinal field.
A magnetic particle buildup from a discontinuity is strongest when the discontinuity is oriented:
a. 180 degrees to the magnetic flux flow.
b. 45 degrees to the magnetic flux flow.
c. 90 degrees to the magnetic flux flow.
d. 90 degrees to the current flow. ✔Correct Answer-c. 90 degrees to the magnetic flux flow.
Which of the following is an advantage of magnetic particle testing over penetrant testing?
a. It does not require post-cleaning of the part.
b. It requires direct access to the surface of the part.
c. It can detect near-surface discontinuities.
Answers |Actual Complete Update |Already Graded A+
Ferromagnetic material is:
a. strongly attracted by a magnet.
b. not highly saturated by magnetic fields.
c. a material with a 0 permeability measurement.
d. not capable of being magnetized. ✔Correct Answer-a. strongly attracted by a magnet.
The permeability of a material describes:
a. the ease with which it can be magnetized.
b. the depth of the magnetic field in the part.
c. the length of time required to demagnetize it.
d. the ability to retain the magnetic field. ✔Correct Answer-a. the ease with which it can be
magnetized.
The retentivity of a material describes:
a. the ease with which it can be magnetized.
b. the depth of the magnetic field in the part.
c. the length of time required to demagnetize it.
d. the ability to retain the magnetic field. ✔Correct Answer-d. the ability to retain the
magnetic field.
The unit usually used to denote flux density is:
a. gauss.
b. henry.
c. farad.
d. ampere. ✔Correct Answer-a. gauss.
Magnetic flux lines that are parallel to a discontinuity produce:
a. strong indications.
b. weak indications.
c. no indications.
d. fuzzy indications. ✔Correct Answer-c. no indications.
A part is adaptable to magnetic particle inspection if:
a. it is attached to an electrostatic field.
b. the material is ferromagnetic.
c. the material is non-ferrous.
d. the material is an electric conductor. ✔Correct Answer-b. the material is ferromagnetic.
, What rule describes the direction of current flow (+ to -) when lines of magnetic force surround
a conductor?
a. left-hand rule
b. right-hand rule
c. flux rule
d. reluctance rule ✔Correct Answer-b. right-hand rule
The proper number of ampere-turns for a given test specimen being examined by longitudinal
magnetism is determined by:
a. its length and diameter.
b. the material.
c. the diameter and the material.
d. its diameter. ✔Correct Answer-a. its length and diameter.
A circular field may be induced into a specimen by:
a. placing the part in an energized coil.
b. passing current directly through the part.
c. passing a magnetic field through the part.
d. placing the part in a north-south orientation. ✔Correct Answer-b. passing current directly
through the part.
An electrical yoke produces:
a. a longitudinal field.
b. a circular field.
c. alternating fields.
d. a swinging field. ✔Correct Answer-a. a longitudinal field.
An energized coil around the part produces:
a. a circular field.
b. a longitudinal field.
c. an intermittent field.
d. a field dependent on the type of current applied. ✔Correct Answer-b. a longitudinal field.
A magnetic particle buildup from a discontinuity is strongest when the discontinuity is oriented:
a. 180 degrees to the magnetic flux flow.
b. 45 degrees to the magnetic flux flow.
c. 90 degrees to the magnetic flux flow.
d. 90 degrees to the current flow. ✔Correct Answer-c. 90 degrees to the magnetic flux flow.
Which of the following is an advantage of magnetic particle testing over penetrant testing?
a. It does not require post-cleaning of the part.
b. It requires direct access to the surface of the part.
c. It can detect near-surface discontinuities.
