Chapter 4 QUIZ

the ELECTRICAL CIRCUIT

1. Identify each symbol in the circuit diagram below. Refer to the table in figure 15 for your answers.

2. Why are dirty or loose connections classified as "opens"?

3. In making any type of connection, what is the most important thing to remember?

4. Why are fuses made of metals which melt at a low temperature?
5. What are some common causes of short circuits?
6. Why are no intentional grounds used on regular Navy ships?

Chapter 4 ANSWERS

the ELECTRICAL CIRCUIT

1. Refer to the table in figure 15.
2. Because they reduce current flow.
3. do not increase the circuit resistance by a dirty or loose connection.
4. So that the fuse will melt and open the circuit before other parts of the circuit overheat.
5. Salt water, heat, wear, and vibration.

6. Because of the danger of a hot wire being grounded to the hull. This would produce a
    short circuit.

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