Electrical

When load-testing a lead-acid battery, which of the following would be the recommended load to be drawn by the carbon pile? A. 1/2 of the CCA rating for 15 seconds B. 100% of the CCA rating for 30 seconds C. 1/2 of the amp/hour rating for 45 seconds D. 1/2 of the amp/hour rating for 15 seconds

1/2 of the CCA rating for 15 seconds

When performing a battery check, the state of charge should not be lower than what percentage? A. 12.4v B. 12.6V C. 12.0v D. 9.6v

12.4v

A fully charged 12 volt battery should have an open-circuit voltage of how many volts? A. 12.8 B. 9.6 C. 12.6 D. 12

12.6

The electrodes and electrolyte of a lead-acid battery cell produce __________volts. A. 2.5 B. 2.0 C. 2.1 D. 2.3

2.1 volts

A battery must be at least ______ charged to perform a capacity test. A. 52% B. 75% C. 15% D. 100%

75%

When load testing a fully charged, lead-acid battery at 70 degrees Fahrenheit at one half the rated CCA for 15 seconds, what is the lowest acceptable voltage during the test? A. 10.2 volts B. 12.6 volts C. 8.5 volts D. 9.6 volts

9.6 volts

Technician A says that conductance testing is considered to be an accurate method of assessing battery service life. Technician B says that a disadvantage of conductance testing is that the battery electrolyte covers must be removed. Who is right? A. Neither A nor B B. B only C. Both A and B D. A only

A only

Which of the following measures how many electrons are in movement at one time? A. Wattage B. Voltage C. Joule's D. Amperage

Amperage

What is the only rotating component of the starter? A. Armature B. Ring Gear C. Rotor D. Brushes

Armature

What is all matter made of? A. Atoms B. Electrons C. Protons D. Ions

Atoms

Which of the electrical diagnostic test is tested while the circuit is working (load on)? A. Starter draw B. Both C and D C. Voltage drop D. Resistance

Both C and D

What needs to be sufficiently high enough to overcome a battery's natural resistance to current flow? A. Charging voltage B. Amperage C. Polarity D. Temperature

Charging voltage

Which of the following would slow a chemical reaction? A. Heat B. Cold C. Excessive amperage D. Excessive torque

Cold

_____________ is a measurement of battery capacity, in amps, that a battery can deliver for 30 seconds while maintaining a voltage of 1.2 volts per cell or higher at 0°F. A. Cranking amps B. Reserve capacity C. Amp-hour D. Cold cranking amps

Cold cranking amps

Which of the following is made up of heavy copper segments separated from each other and the armature shaft by insulation? A. Commutator B. Field coils C. Pole shoes D. Armature windings

Commutator

Tracing Current flow in wiring diagrams is often easier using what thoery perspective? A. Hole B. Conventional C. Electron D. Hybrid

Conventional Theory

What is produced by the spinning magnetic field of the armature, which induces current in the opposite direction of battery current through the motor? A. Reverse Polarity B. Voltage Drop C. Counter Electomotive Force D. Cold Cranking Amperage

Counter Electomotive Force

Batteries used for what purpose are commonly termed starting, lighting, and ignition (SLI) batteries? A. Heating B. Cranking C. Steering D. Idling

Cranking

Which of the following would result when two batteries are conected in parallel? A. Nothing if both the batteries have the same CCA and nominal voltage B. Voltage doubles C. Current capacity doubles D. Voltage and current both double

Current capacity doubles

Which of the following would result when two batteries are conected in parallel? A. Voltage and current both double B. Voltage doubles C. Nothing if both the batteries have the same CCA and nominal voltage D. Current capacity doubles

Current capacity doubles

What types of batteries are used to deliver a lower, steady level of power for a longer period of time? A. Sealed lead-acid B. Valve-regulated lead-acid C. Deep cycle D. Traction

Deep cycle

When replacing a battery, which is the recommended sequence to use in disconnecting and re-connecting the cables? A. Disconnect the ground cable last and re-connect it first B. Disconnect the ground cable first and re-connect it last C. Disconnect the positive cable first and re-connect it last D. Disconnect the positive cable last and re-connect it last

Disconnect the ground cable first and re-connect it last

If the electrolyte level is lost through evaporation, what should be added? A. Distilled water B. Tap water C. Acid D. Sulfate crystals

Distilled water

During charging and discharging, water in the electrolyte is broken apart into its constituent hydrogen and oxygen. What is this process called? A. Gassing B. Sulfation C. Galvanic reaction D. Electrolysis

Electrolysis

If an excessive current flows through a circuit, what element melts at specific amperage due to the calibrated thickness of the metal strip? A. Circuit breaker B. Battery C. Fuse D. PPTCs

Fuse

What is generally an unwanted by-product of resistance? A. Heat B. Light C. Low amperage D. Voltage drops

Heat

____________ is the measurement of frequency and indicates the number of cycles per second. A. Hertz B. Polarity C. Ampere D. Ohms

Hertz

Dirty, corroded, or loose connections result in what type of circuits? A. Grounded B. Intermittent C. High Resistance D. Short

High Resistance

An open circuit has what type of resistance? A. High B. Short C. Infinite D. Low

Infinite

When an atom has an imbalance of electrical charges due to the gain or loss of electrons it is a(n)________. A. Free Electron B. Ion C. Electromotive Force D. Current

Ion

What type of circuits are common examples of parallel circuits? A. Power B. On-board diagnostic system C. Control D. Lighting

Lighting

What test determines the ability of a battery to deliver cranking amperage and is based on the battery CCA rating? A. Three-minute charge B. Conductance C. State of charge D. Load

Load

If voltage is held constant in a circuit, amperage increases if resistance decreases and amperage decreases if resistance increases. What law does this relationship between factors demonstrate? A. Joules B. Ohm's C. Electrostatic D. Kirchhoff's

Ohm's

What law explains in mathematical relationship between amperage, voltage, and resistance in a circuit? A. Kirchhoff's B. Boyle's C. Watt's D. Ohm's

Ohm's

The relationships between amperage, voltage, and resistance are calculated using __________. A. Ohm's law B. the heating effect of current C. Joule's law D. conventional theory

Ohm's law

Which of the following can be used to find points where circuit continuity is lost only if the circuit is not powered? A. Ohmmeter B. Voltmeter C. Ammeter D. Potentiometer

Ohmmeter

What type of a circuit's electrical pathway is broken or unconnected? A. Open B. Intermittent C. Closed D. Resistive

Open

Which of the following tests tells you how charged or discharged a battery is? A. Specific gravity B. Open circuit voltage C. Load D. Three-minute charge

Open circuit voltage

What type of a circuit is characterized by amperage flow through each branch depends on its resistance? A. Series B. Simple C. Series-parallel D. Parallel

Parallel

What is a battery case usually made of? A. Polypropylene B. Lead C. Plastic D. Hard rubber

Polypropylene

In direct current conventional theory, electrons flow in what direction? A. Back and forth within a circuit B. Continually changing direction C. Negative to positive D. Positive to negative

Positive to negative

Where are positive electrical charges found? A. Neutrons B. Protons C. Ions D. Electrons

Protons

Like charges are ____________ by one another. A. Resisted B. Balanced C. Attracted D. Repelled

Repelled

What measurement is modeled on estimates of how long an automobile could be driven after an alternator fails with electrical loads from headlights and other loads before the ignition system fails? A. Self-discharge B. Specific gravity C. Cranking amps D. Reserve capacity

Reserve capacity

What is measured in ohms? A. Circuits B. Currents C. Conductivity D. Resistance

Resistance

Which of the following is considered electrical friction? A. Current B. Voltage C. Resistance D. Amperage

Resistance

___________ plates are very thin, porous, glass-fiber materials allowing electrolyte to diffuse freely throughout the cell and prevent plate contact. A. Deep cycle B. Positive C. Separator D. Negative

Separator

In what type of circuit are there multiple loads but only one path for current to flow? A. Combination B. Series C. Parallel D. Series-parallel

Series

In what component would you find the pull-in and hold-in windings? A. Drive and yoke B. Armature C. Field windings D. Solenoid

Solenoid

__________ is driven off battery plates when charging. A. Black-carbon graphite B. Sulfate C. Strontium D. Silver alloy

Sulfate

A typical electrical problem that can cause starting system problems includes____________. A.seized pistons or bearings B. stripped ring gear teeth C. leaky fuel pressure regulator D. Sulfated battery

Sulfated battery

What can occur if a battery is left in a discharged state for a long period of time, continually undercharged, or left partially charged? A. Ignition B. Recombination C. Galvanic reaction D. Sulfation

Sulfation

Which of the following is indicated using a three-minute battery charge test? A. Sulfation B. Low electrolyte level C. Shedding D. Uncharged battery

Sulfation

Which of the following occurs when batteries are subjected to prolonged undercharge conditions? A. Excessive vibration B. Grid corrosion C. Shedding D. Sulfation

Sulfation

Technician A says that excessive vibration can shorten the life of a lead-acid battery by shaking the active material from the plates. Technician B says that truck batteries are designed to sustain high levels of vibration and this seldom causes premature failures. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B

Technician A only

Which of the following switches would be an overcrank protection switch? A. Dead battery start B. Neutral safety C. Ignition key D. Thermal protection

Thermal protection

What type of circuit breaker keeps the circuit breaker open until the overload condition is removed? A. Type 2 B. Fusible C. Type 3 D. Type 1

Type 2

Which of the following would result when two batteries are conected in series? A. Current capacity doubles B. Nothing if both the batteries have the same CCA and nominal voltage C. Voltage doubles D. Voltage and current both double

Voltage doubles

When troubleshooting electrical circuits, what would you use to look for voltage drops? A. Voltmeter B. Ohmmeter C. Graphing meter D. Ammeter

Voltmeter

What is the unit for measuring power? A. Voltage B. Amperage C. Wattage D. Ohms

Wattage

What is the unit for electrical power? A. Amps B. Watts C. Farads D. Ohms

Watts

In a battery, the electrolyte level should be ________ the plates. A. below B. above C. around D. even with

above

Incorrect charging system voltage can cause _________. A. undercharging B. overcharging C. low electrolyte levels D. all of the above

all of the above

Which of the following conditions can shorten the life of a heavy-duty, lead acid battery? A. overcharging B. undercharging C. deep-cycling D. all of the above

all of the above

Excessive ________ through terminals and connectors will produce heat. A. amperage B. protons C. voltage D. wattage

amperage

The amount of __________ a battery supplies is a function of the surface area of the plates. A. voltage B. amperage C. resistance D. discharge

amperage

What solution is recommended to neutralize and clean corrosion from battery posts and terminals? A. clean electrolyte B. chassis grease C. baking soda and water D. distilled water

baking soda and water

The electrical ___________ of a battery is the amount of electrical current a lead-acid battery can supply. A. resistance B. energy C. capacity D. load

capacity

Atoms with the fewest electrons in its outer shell are the best ____________. A. transistors B. conductors C. semiconductors D. insulators

conductors

Materials that hold electrons loosely enable electrons in its outer shell to easily move and are categorized as ____________. A. resistors B. conductors C. semiconductors D. insulators

conductors

Unlike the short-to-power malfunction, a short-to-ground will draw higher than expected ___________. A. continuity B. current C. resistance D. tolerance

current

In a series circuit, there can be multiple loads but only one path for ___________ A. resistance B. voltage C. amperage D. current flow

current flow

In cold weather, battery power drops drastically because the __________ thickens. A. acids B. oil C. gas D. electrolyte

electrolyte

Only ___________ can be removed or added to an atom. A. protons B. ions C. neutrons D. electrons

electrons

Forces of charge repulsion and attraction are termed ___________. A. semiconduction B. repelling force C. electrical charge D. electrostatic force

electrostatic force

The starter motor is an electric motor mounted on the engine block or ____________. A. starter motor case B. pressure tank C. torque converter D. flywheel housing

flywheel housing

A Resistor converts electrical energy into __________ energy. A. chemical B. kinetic C. heat D. light

heat

Which of these would be concidered an input to a module? A. magnetic switch B. relay switch C. starter relay D. ignition key

ignition key

The main advantage of conductance testing is that _________________. A. testing can usually be performed in under two hours B. heat is produced C. high-frequency DC does not affect battery D. it does not require any battery discharge activity

it does not require any battery discharge activity

Battery plates are made of two different compositions of lead fabricated from paste bonded to lead alloy grids. The negative plate uses lead and the positive plate uses __________. A. sulfuric acid B. lead dioxide C. lead sulfate D. silver alloy

lead dioxide

An advantages of low- or no-maintenance batteries would include______________. A. less gassing B. higher self-discharge rate C. lower electrical reserve capacity D. grid growth/expansion

less gassing

Starter motors can be tested in two ways. The off-vehicle test is called a(n) _________test. A. no-load B. available voltage C. starter draw D. starter relay bypass

no-load

All modern vehicles have a small amount of _________ when the ignition is turned off. A. parasitic draw B. constant amperage C. electrical energy D. input voltage

parasitic draw

Direct-drive starters transfer torque directly to the starters___________gear. A. flywheel ring B. pinion C. ring D. spur

pinion

A deficiency of electrons gives an atom an overall ____________charge. A. positive B. electrical C. negative D. neutral

positive

When testing specific gravity of a lead-acid battery, which of the following produces a reading that is not influenced by the actual temperature of the electrolyte? A. glass bulb hydrometer B. plastic float type hydrometer C. refractometer D. built-in hydrometer

refractometer

When testing specific gravity of a lead-acid battery, which of the following produces a reading that is not influenced by the actual temperature of the electrolyte? A. plastic float type hydrometer B. glass bulb hydrometer C. built-in hydrometer D. refractometer

refractometer

All electrical devices have internal ____________. A. battery banks B. venting C. combustion D. resistance

resistance

As the length of the conductor increases, so does the _________________. A. temperature B. resistance C. voltage D. diameter of the conductor

resistance

Loose or missing battery hold-downs cause plate ____________. A. impedance B. shedding C. conductance declines D. cracking

shedding

In a parallel circuit, there are multiple pathways for current flow, and all components are connected directly to the ___________. A. load B. circuit breaker C. source voltage D. circuit protection

source voltage

When the ___________ of battery acid is too low, such as when a battery is discharged, it may freeze in colder climates. A. parasitic draw B. reserve capacity C. specific gravity D. amp-hour

specific gravity

Field coils are connected in series with the armature windings through the ________. A. starter brushes B. battery cables C. bearings D. brass bushings

starter brushes

The greatest ___________ is produced at low speed since the motor will draw the highest amperage. A. torque B. horse power C. resistance D. voltage

torque

Unlike fuses, circuit breakers do not require replacement when they_________. A. reset B. ground C. trip D. calibrate

trip

What is the best description of the funtion of a relay? A. close a switch B. use low current control circuit to control a higher current work circuit C. circuit protection D. Armatures

use low current control circuit to control a higher current work circuit

A good fuse will have virtually the same ________ on both sides. A. amperage B. voltage C. resistance D. current

voltage

Identifying problems in series circuits often becomes a matter of measuring _________. A. voltage drops B. amperage C. resistance D. wattage

voltage drops

Lead-acid battery electrolyte is a mixture of sulfuric acid and __________. A. calcium B. water C. barium D. strontium

water