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ASSIGNMENT 1
Textbook assignment: Chapter 1, “Circuit Protection Devices,” pages 1-1 through 1-73.
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1-1. Circuit measurement is used for which of
the following purposes?
1. To find the weight of a circuit
2. To increase the power used in a circuit
3. To discover the length and width of a
circuit
4. To determine the reason a circuit is not
functioning properly
1-2. An in-circuit meter is used for which of
the following purposes?
1. To reduce circuit losses
2. To monitor circuit operation
3. To control power to a circuit
4. To prevent circuit overload conditions
1-3. Out-of-circuit meters have which of the
following advantages over in circuit
meters?
1. They can be used on more than one
device
2. They are lighter weight
3. They are more rugged
4. All of the above
Figure 1-A.—Compass and wire (dc).
IN ANSWERING QUESTIONS 1-4 THROUGH
1-6, REFER TO FIGURE 1-A.
1-4. When S1 is closed, the compass needle
will align itself in which of the following
manners?
1. With magnetic north
2. With geographic north
3. Parallel to the conductor
4. With the magnetic field around the
wire
1-5. If the current through the conductor is
decreased, what happens to the magnetic
field around the conductor?
1. It reverses
2. It decreases
3. It increases
4. It oscillates
1-6. When the current through the conductor
decreases, the compass needle will react in
which of the following manners?
1. Point more to magnetic north
2. Move farther away from magnetic
north
3. Swing back and forth from east to
west
4. Vibrate rapidly back and forth around
magnetic north
1-7. The d'Arsonval meter movement is based
on which of the following principles?
1. Moving vane
2. Electrostatic
3. Electrodynamic
4. Permanent-magnet moving-coil
