6
Magnetic Particle Testing Lecture Guide l LESSON 1
7. Ferromagnetic materials are strongly attracted
to:
a. diamagnetic fields.
b. tachyons.
c. magnetic fields.
d. nonferromagnetic fields.
8. A material is easily magnetized if it is:
a. paramagnetic.
b. diamagnetic.
c. ferromagnetic.
d. nonferromagnetic.
9. Diamagnetic materials are __________by a
magnetic field.
a. strongly attracted
b. unaffected
c. weakly attracted
d. weakly repelled
10. Magnetic lines of force (magnetic flux):
a. never cross each other.
b. are least dense at the poles.
c. will not travel in the path of least resistance.
d. always cross each other.
11. Magnetic particle testing cannot be used on
parts whose main content is.
a. iron.
b. nickel.
c. copper.
d. cobalt.
12. When would you use magnetic particle testing
on paramagnetic materials?
a. Only when the technician has permanent
magnets or prods at his or her disposal.
b. A technician would never use magnetic
particle on paramagnetic materials.
c. When liquid penetrant testing is not
available.
d. The decision has to be made by the
responsible Level III.
13. A bar magnet that is cut in half will produce
which of the following?
a. Four north and no south poles.
b. Four south and no north poles.
c. One north and one south pole.
d. Two north and two south poles.
14. A continuous circular (ring-shaped) test object
without a leakage magnetic field will have
__________north and south poles.
a. strong, easily detected
b. no detectable
c. covalently formed (ionized)
d. attracting