Here is the "Electrician's Mate 3 - Navy Training Courses" (NAVPERS 10548)
in its entirety (or will be eventually). It should provide one of the Internet's best
resources for people seeking a basic electricity course - complete with examples worked
U.S. GOVERNMENT PRINTING OFFICE; 1949
CHAPTER 2 QUIZ
NOTICE: This page has not been proofed yet!
1. What other materials besides iron show magnetic properties?
2. What materials have stronger magnetic
properties than iron?
3. Name three nonmagnetic materials.
4. How do nonmagnetic materials differ
from nonconductors of electricity?
5. If you have a magnetic material that is not magnetized, name two
ways in which a
magnet could be used to produce magnetism in it.
6. Complete the following
a. Magnets act as if magnetic lines of _________ existed between poles.
b. The space in
which magnetic lines are present is called the magnetic _________.
c. The magnetic lines through a
particular area comprise the magnetic _________.
d. The path magnetic lines follow is called a magnetic
7. Complete the following sentences:
a. Flux density indicates the _________ of a
b. Flux density is expressed in _________ per square inch.
c. The unit of flux density is the
8. Complete the following sentences:
a. Magnets attract magnetic materials because
magnetic lines tend to
b. Magnetic shielding is difficult because
magnetic lines pass through
c. An instrument can be partly shielded from
magnetic fields by a housing of magnetic
materials because magnetic lines pass through magnetic
d. Magnets repel each other because magnetic lines flowing in the same direction
tend to _________ each other.
e. Magnetic lines never _________.
f. Each magnetic line
forms a complete _________.
g. Like magnetic poles will _________ each other.
h. Unlike magnetic
poles _________ each other.
i. The force of attraction between magnets is _________ proportional to the pole
j. The force of attraction or repulsion between magnets is _________ proportional to
the square of the distance between them.
9. How does the arrangement of electrons within the atom
differ between magnetic
and nonmagnetic materials?
10. What does a magnetizing force do to the
molecular magnets of a magnetic material?
11. According to the molecular theory of magnetism, why is hard
steel more difficult to
magnetize then soft iron?
12. Instruments using permanent magnets should
not be jarred, hammered, or heated
because jarring, hammering and heat do what to the permanent magnet?
/13. Using a magnetic compass, how would you detect if a magnetic material is magnetized?
CHAPTER 2 ANSWERS
1. Stay tuned