ASE1020103 Basic Auto Electricity
Technician A says a common point is represented by a black dot on the wiring diagram. Technician B says a connector can be a common point. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says a shorted circuit can generate excessive heat. Technician B says a shorted circuit will cause the circuit protection device to open. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
In a parallel circuit, there is more than one path for electricity to follow. True False
True
Lt Grn is printed next to a wire on a wiring diagram. This is the color of the wire on the vehicle. True False
True
There is __________ resistance in the stranded wire than in the solid wire. more less
less
Three 10-ohm resistors are wired in parallel. What is the total resistance? 30 ohms 10 ohms 33 ohms 3.3 ohms
3.3 ohms
According to Ohm's Law, what is the resistance when 1 volt pushes 1 ampere of current through a conductor? 0 ohm 1 ohm 1 watt 1 coulomb
1 ohm
What is the amperage flowing through a 36 watt bulb in a 12 volt circuit? 432 amps 3 amps 12 amps 0.3 amps
3 amps
A taillight bulb is glowing dimly. A voltmeter placed across the bulb reads 4 volts. Technician A says there may be excessive resistance in the ground circuit. Technician B says there may be excessive resistance in the power feed circuit. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
An operative radiator fan needs to be repaired. Technician A says a single circuit-type wiring diagram would be the simplest diagram to use. Technician B says a component locator will probably be needed to repair this circuit. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Ground straps are used to: Provide a return path to the battery between insulated components. Suppress electromagnetic induction. Both A and B Neither A nor B
Both
Technician A says a wiring diagram indicates where circuits receive their voltage source and the color of the wires used in the circuit. Technician B says a wiring diagram indicates what circuits are interconnected and gives the location of the electrical components. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says amperage is the same at any point in a series circuit. Technician B says the total resistance is the sum of all resistance in a series circuit. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says both an ohmmeter and a self-powered test light may be used to test for continuity. Technician B says both may be used to test fuses. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says if a fuse blows as soon as it is installed, a short to ground is indicated. Technician B says the component will not turn off if the short to ground is on the ground side of the load component but before a grounding switch. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says power is found by multiplying voltage times current. Technician B says power is expressed as wattage. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says testing with a voltmeter can determine the voltage drop across the headlights. Technician B says a voltmeter can determine if excessive resistance is in the circuit. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says that wiring harnesses pass from the passenger compartment to the engine compartment through bulkhead connectors. Technician B says a wire harness is a group of wires that branches out to various electrical components. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says the VIN number will help to determine the correct wiring diagram to use for diagnosis. Technician B says each automobile model may have a different wiring diagram. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says the total amperage in a parallel circuit is equal to the sum of the individual branch circuits. Technician B says the amperage in a series circuit is the same anywhere in the circuit. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says to test fuses you could use a voltmeter or a test light. Technician B says a voltmeter and a test light are connected in parallel. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says two connectors with the same number are physically the same connector. Technician B says the two connectors are drawn apart so the drawing is easier to read. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says when a magnetic field is moved across a conductor, voltage will be induced in the conductor. Technician B says when a conductor is moved across a magnetic field, voltage will be induced in the conductor. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
Technician A says wiring diagrams give specific circuit information and detail. Technician B says a wiring diagram will help you find the fault. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Both
How are fuses rated? By current capacity. By voltage capacity. By resistance capacity. By power capacity.
By Current Capacity
What is the formula for Ohm's Law (in which E = volts, I = amperes, and R = resistance)? I = E × R E = I × R R = E × I All of the above
E = I × R
An electrical wiring diagram gives the exact location of electrical components on the vehicle. True False
False
Circuit protectors are usually found on the negative side of the circuit. True False
False
Corrosion is not a contributor to voltage drop. True False
False
Ground straps can be tested by performing a voltage drop test. True False
False
In a series circuit, total resistance will always be lower than any one resistance value. True False
False
Switches are the least common means of providing control of electrical current flow to an accessory. True False
False
The conductor of an 18-gauge wire is larger than that of a 10-gauge wire. True False
False
The frame of the vehicle is normally attached to the positive battery post. True False
False
The total resistance of all the parallel loads is always more than the smallest individual resistance. True False
False
To find the resistance of a circuit, divide the amperage by the voltage (I/V). True False
False
Which of the following is true of the LED? It produces a red, green, or yellow light. It only contains an anode. It requires an external light source. All of these choices.
It produces a red, green, or yellow light
What will adding resistance to a series circuit cause? More current to flow Less current to flow The total resistance to go down None of the above
Less current to flow
A voltmeter placed across the terminals of an inoperative electric window motor indicates 12 volts when the window switch is depressed. Technician A says the window ground circuit may be faulty. Technician B says the window power feed circuit may be faulty. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Neither
Technician A says an open circuit has no breaks in the path and current will flow. Technician B says in a closed circuit the circuit path is broken. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Neither
Technician A says you may replace a fusible link with a larger gauge wire. Technician B says a burned-out fuse indicates a larger-rated fuse should be used. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Neither
____ wiring is the term used for conductors used for low voltage circuits. Thin insulation Secondary Primary Low gauge
Primary
A(n) ____ is designed to turn off the system whenever excessive current or an overload occurs. Gauss gauge solenoid protection device oscilloscope
Protection device
____ wire means the conductor is made of several individual wires that are wrapped together. Stranded Copper Primary Secondary
Stranded
A switch is drawn on a wiring diagram with "NC" printed beside it. What does this indicate? The switch will be normally closed with the vehicle running. The switch will be open with the vehicle off. The switch will be closed with the vehicle off. None of the above
The switch will be closed with the vehicle running
In a series circuit which of the following statements is correct? The circuit amperage will increase as more resistance is added The total resistance is the sum of all the resistances in the circuit The total resistance is less than the lowest resistor All of the above
The total resistance is the sum of all the resistances in the circuit
A closed circuit is a completed path for the flow of electricity starting from a source and returning to the source. True False
True
A resistor drawn with an arrow through it is the symbol for a variable resistor. True False
True
A short circuit will result when a current carrying wire is grounded before reaching the load. True False
True
Soldering is the preferred method of copper wire. True False
True
The frame of the vehicle is normally attached to the negative battery post. True False
True
The total amperage in a parallel circuit will be the sum of the individual circuits. True False
True
The trigger selection tells the lab scope when to begine to display a waveform. True False
True
Voltage drop can exist on the power side as well as the ground side of an electrical circuit. True False
True
Voltage will exist between any two points in a circuit unless the potential drops to zero. True False
True
Voltmeter test leads are placed in parallel with the circuit. True False
True
____ is the electrical pressure that causes electrons to move provided there is a complete path for them to do so. Current Resistance Circuit Voltage
Voltage
What is voltage drop? Voltage used up when pushing current through a resistance Current used to go through a resistance Electrons used to go through a resistance All of the above
Voltage used up when pushed through a resistance
In a closed circuit with a capacitor, when will the current stop flowing? When the voltage charge across the capacitor plates becomes less than the source voltage When the voltage charge across the capacitor plates becomes equal to the source voltage When the voltage charge across the capacitor plates becomes greater than the source voltage When the voltage charge across the capacitor plates becomes equal to the resistance of the plates
When the voltage charge across the capacitor plates becomes equal to the source voltage
Ground straps are used to: Provide a return path to the battery between insulated components. Suppress electromagnetic induction. All of these choices. None of these choices.
all of these choices
In most color codes, the first group of letters designates the __________ __________ of the insulation. The second group of letters indicates the color of the __________. material composition, insulation base color, tracer material composition, base tracer color, base
base color, tracer
Most of the wires in an automobile are covered with ____ insulation to identify wires and electrical circuits. colored numbered metallic diagrammatic
colored
Where is the best place to find the location of a blower relay? Wiring diagram manual Component locator Connector locator Ground locator
component locator
If the connector is a one-piece, molded-type connector, it cannot be ____ for repairs. disassembled spliced reprogrammed removed
disassembled
Most wiring diagrams do not show an actual drawing of the components. Rather, they use ____to represent the components. codes legends electrical symbols circuit numbers
electrical symbols
A ____ is a conductor with a special heat-resistant insulation. cartridge blade fusible link ceramic
fusible link
The AWG standard assigns a(n) ____ number to the wire based on the diameter of the conductor not including the insulation. alphanumeric resistive thermal based gauge
gauge
____ between the powertrain components and the vehicle's chassis are used to complete the return path to the battery. Wiring harnesses Grommets Ground straps Sheet metal parts
ground straps
______________________________ complete the return path to the battery between components that are insulated. Connectors Power wires Grounds Buss bars
grounds
In a wire, an increase in temperature creates a similar __________ in resistance. decrease increase
increase
A(n) ____ is a device that uses low current to control a high-current circuit. ohmmeter relay opening switch coil
relay
Once it is determined that the battery is operating correctly, the ____ should always be the starting point in troubleshooting an electrical system. schematic component locator ground and power leads starting system
schematic
The greatest advantage of a digital storage oscilloscope (DSO) is the ____ at which it samples electrical signals. speed range frequency complexity
speed
____ is a term used to mean joining of single wire ends or the joining of two or more electrical conductors at a single point. Tinning Heat shrink Splice Stripping
splice
A(n) ____ is the most common means of providing control of electrical current flow to an accessory. outlet switch pole throw
switch
What does the sum of the voltage drops in a series circuit equal? The amperage The resistance The source voltage The shunt circuit voltage
The source voltage
The term ____ means a circle and is the path of electron flow consisting of the voltage source, conductors, load component, and return path to the voltage source. parallel circuit diode series
Circuit
All of the following statements about voltage drops are true except: Voltage drop can be measured with a voltmeter. Voltage drop is the conversion of electrical energy into another form energy form. All of the voltage from the source must be dropped before it returns to the source. Corrosion is not a contributor to voltage drop.
Corrosion is not a contributor to voltage drop
A wiring diagram illustrates three wires that are joined together at "C-215." Technician A says the wires are connected together at connector C-215. Technician B says the three wires are part of circuit 215. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech A
An inoperative horn is being tested. A DVOM placed across the relay load contact terminals indicates battery voltage when the horn button is pushed. A "click" is heard from the relay when the button is pushed. Technician A says the relay is bad. Technician B says the relay coil circuit is bad. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech A
Technician A says a wiring diagram is an excellent tool in locating circuit failures. Technician B says in most cases a wiring diagram is not necessary to locate circuit failures. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech A
Technician A says the conventional theory of current flow states that current flows positive to negative. Technician B says current flows randomly. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech A
Technician A says voltage will not exist between any two points in a circuit if the potential is zero. Technician B says corrosion is NOT a contributing factor to voltage drop. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech A
Two technicians are discussing shielded wire repair. Technician A says the shielded wire must kept separate from the circuit wire. Technician B says there is no difference between repairing a shielded or non-shielded wire. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech A
Whenever the brake pedal is pressed the left-rear and right-rear taillights, and the left rear and the right-rear brake light of a vehicle illuminate dimly. Technician A says the brake lights may have a poor ground connection. Technician B says the brake light switch may have excessive resistance. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech A
Technician A says a fuse will automatically reset after the cause of the overload is repaired. Technician B says when an overload occurs, the protection device creates an open. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech B
Technician A says an atom that loses or gains one electron is balanced. Technician B says an atom that loses or gains one electron is called a charged particle or ion. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech B
Technician A says crimping solderless connections is the best method of splicing wires. Technician B says crimping should not be used if connection is subjected to excessive movement. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech B
The circuit breaker that protects a power window circuit opens whenever the window is lowered. Technician A says the internal resistance of the motor is too high. Technician B says the window regulator may be sticking. Who is correct? Technician A only Technician B only Both Technician A and B Neither Technician A nor B
Tech B
__________ __________ __________ are used to prevent damage to the wiring by maintaining proper wire routing and retention. Connector protective devises Connector terminal locks Printed circuit boards Wiring protective devices
wiring protective devices
