6.5 Exercises for Unit 6

1. At least how many basic materials are in the universe?

A. 400
B. 300
C. 200
D. 100

2. The three basic particles that make up all elements are protons, electrons and _____.

A. cytons
B. neutrons
C. diodes
D. There are only two particles.

3. A group of electrons produces what type of electrical charge?

A. Positive
B. Negative
C. Neutral
D. Ionized

4. Electrons that have like charges perform what action?

A. Attract each other
B. Repel each other
C. Contrast each other
D. Distinguish each other

5. Scientists discovered that electron flow in an automotive electrical circuit flow in what manner?

A. From positive to negative
B. From front to back
C. From back to front
D. From negative to positive

6. Electrical energy is transferred through conductors by the movement of what?

A. Free electrons
B. Free protons
C. Free neutrons
D. Free quarks

7. What transistor design is the most often used in automotive applications?

A. PPN
B. NNP
C. PNP
D. NPN

8. In an electrical circuit, current (or electron) flow is measured in _____.

A. voltage
B. amperage
C. resistance
D. ohms

9. Using Ohmís law, what is the amperage in a circuit if the voltage is 13.8 and resistance is 2.25 ohms?

A. 3.16
B. 3.61
C. 5.10
D. 6.13

10. What type of circuit failure occurs when copper touches copper?

A. Short circuit
B. Open circuit
C. Ground circuit
D. Dead circuit

11. What type of circuit failure occurs when the fuse fails?

A. Short circuit
B. Open circuit
C. Ground circuit
D. Dead circuit

12. What type of circuit failure occurs when the wiring circuit is touching the vehicle frame?

A. Short circuit
B. Open circuit
C. Ground circuit
D. Dead circuit

13. To have a parallel circuit, you must have what minimum number of resistance units?

A. Four
B. Three
C. Two
D. One

14. What type of automotive circuit allows the disconnection or burning out of any individual component without affecting the operation of the others?

A. Parallel
B. Parallel-series
C. Series
D. Series-parallel

15. When the direction of current flow is known, what rule can be used to determine the north pole of an electromagnet?

A. Right-hand
B. Left-hand
C. Lines-of-force
D. Ohm's

16. How is electromagnetic induction produced in an AC generator?

A. The wire is moved through a stationary magnetic field.
B. The wire is stationary and the magnet is moved so the magnetic field is carried past the wire.
C. The wire and electromagnet are both held stationary and current is turned on and off.
D. Both the wire and electromagnet are moved, thereby alternating the magnetic field.