9
Figure 2-A.—Recognition practice.
IN ANSWERING QUESTIONS 2-8
THROUGH 2-13, REFER TO FIGURE 2-A.
2-8. Which of the following is the schematic
symbol for a fuse?
1. A
2. B
3. F
4. G
2-9. Which of the following is the schematic
symbol for a circuit breaker?
1. A
2. B
3. F
4. G
2-10. Which of the following is an illustration
of an open cartridge fuse?
1. C
2. D
3. E
4. I
2-11. Which of the following is an illustration
of a good cartridge fuse?
1. C
2. D
3. E
4. I
2-12. Which of the following is an illustration
of a good plug-type fuse?
1. C
2. D
3. E
4. H
2-13. Which of the following is an illustration
of an open plug-type fuse?
1. C
2. D
3. E
4. H
2-14. Which of the following factors is NOT
used to rate fuses?
1. Size
2. Current
3. Voltage
4. Time delay
2-15. A fuse current rating has which of the
following definitions?
1. The maximum current that can flow
through a circuit without causing the
circuit to overheat
2. The maximum current that will flow
through a circuit if there is a direct
short
3. The maximum current that will flow
through a fuse without opening the
fuse
4. The maximum current that will not
"jump" an open fuse
