Review Questions

1. Which of the following is not considered part of the primary wiring system of an automobile? a.Spark plug cables b.Lighting circuits c.Accessory wiring circuits d.Power distribution circuits 2. Automotive wiring, or circuit conductors, exist as all of the following, except: a.Single-strand wire b.Multistrand wire c.Printed circuitry d.Enameled chips 3. Which of the following wires are known as suppression cables? a.Turn signal wiring b.Cables from the battery to the starter motor c.Cables from the distributor cap to the spark plugs d.Wiring harnesses from the fuse panel to the accessories 4. High-resistance ignition cables are used to do all of the following, except: a.Reduce radio frequency interference b.Provide extra resistance to reduce current flow to the spark plugs c.Provide more current to the distributor d.Boost the voltage being delivered to the spark plugs 5. One of the most common wear points in an automobile electrical system is: a.At the ground connecting side b.The point where a wire has been bent c.Where two connectors have been joined d.At a Maxifuse connection 6. The symbol below indicates which of these:

a.Battery b.Capacitor c.Diode d.Ground

7. Which of the following is not a term used to describe an automobile wiring system? a.Hot-return system b.Single-wire system c.Ground-return system d.Negative-ground system 8. For easy identification, ground wires on most automotive electrical systems are color-coded: a.Red b.White c.Black d.Brown 9. Which of the following is not used to switch current flow? a.Relay b.Solenoid c.Transistor d.Coil Windings 10. Two separate windings are used in starter solenoids to: a.Increase resistance in the circuit b.Decrease resistance in the circuit c.Increase current being drawn from the battery d.Decrease current being drawn from the battery 11. Which of the following reverses the flow of current through the conductor of a motor? a.The armature b.The terminals c.The field coils d.The commutator 12. The symbol shown below is for which of these:

a.Fuse b.Relay c.Motor d.Resistor 13. Which of the following is NOT used toprotect a circuit from too much currentflow? a.Fuse b.Buss bar

c.Fusible link d.Circuit breaker 14. What usually causes a fuse to “blow”? a.Too much voltage b.Too much current c.Too little voltage d.Too little resistance 15. Fuses are rated by __________capacity. a.Current b.Voltage c.Resistance d.Power 16. Which of the following is true of circuit breakers? a.Made of a single metal strip b.Must be replaced after excess current flow c.Less expensive than fuses are d.Used for frequent temporary overloads 17. This symbol represents which of these items:

c.Installation diagram d.Alternator circuit diagram 20. Automobile manufacturers color-code the wires in the electrical system to: a.Help trace a circuit b.Identify wire gauge c.Speed the manufacturing process d.Identify replacement parts 21. A wire in a Valley Forge (system) diagram is identified as .8 PUR/623 which of the following: a.8-gauge wire, power plant, circuit number 623 b.8-gauge wire, purple, vehicle model623 c.0.8-mm wire, purple, circuit number 623 d.0.8 points per length, vehicle model 623 22. Which of the following electrical symbols indicates a lamp? a.

b.

a.Circuit breaker b.Variable resistor c.Capacitor d.Solenoid 18. The following two symbols represent which two devices? c.

d.

a.Zener diode and a PNP transistor b.Zener diode and a NPN transistor c.One-way diode and a PNP transistor d.One-way diode and a NPN transistor 19. The electrical diagram that shows where the wires and loads are physically located on the vehicle is the: a.Schematic diagram b.Electrical system diagram 23. Two technician are discussing the meaning of different types of wiring diagrams.

Technician A says schematic diagrams tell you how a circuit works and how the individual components connect to each other and they are commonly used by engineers. Technician B says a system diagram is drawing of a circuit or any part of

a circuit that shows circuit numbers, wire size, and color-coding. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B 24. Technician A says the battery cable provides a connection from the vehicle chassis to the battery. Technician B says that automotive electrical systems are called double-wire or positive return systems. Who is right? a.A only b.B only

c.Both A and B d.Neither A nor B 25. Technicians are discussing wire gaugesizes. Technician A says wire sizenumbers are based on the crosssectional area of the conductor and largerwires have lower gauge numbers.Technician B says wire cross-section ismeasured in circular rods.

Who is right? a.A only b.B only c.Both A and B d.Neither A nor B