Battery Systems
What is the primary function of a battery in an electrical system?
To start the engine and supply power to accessories.
What are the two most common types of circuit protection devices?
Fuses and circuit breakers.
What is the most common conductor material used in wiring?
Copper.
What happens when current flows through a conductor?
A magnetic field is created around the conductor.
What are the three most common types of electrical circuit faults?
Open circuit, short circuit, and high resistance.
What happens to the electrolyte as a battery discharges?
It becomes more like water as the acid content decreases.
What happens when excessive amperage flows through a fuse?
The fuse element melts, breaking the circuit.
What is the purpose of wire insulation?
To prevent electrical shorts and protect the conductor.
What is the principle behind alternators generating electricity?
Magnetic flux lines moving past a conductor induce current flow.
What tool is commonly used to check for circuit continuity?
A multimeter.
What gas is produced when a battery is charging?
Hydrogen gas.
What is the difference between a fuse and a circuit breaker?
A fuse is a one-time-use device, while a circuit breaker can be reset.
What problem can moisture cause in wiring connectors?
Corrosion on the pins, leading to increased circuit resistance.
What is the function of a solenoid?
It uses electromagnetism to create mechanical motion.
What is a common cause of high resistance in an electrical circuit?
Corroded or loose connections.
What is the process called where a battery discharges and then recharges?
Cycling.
What are the two main types of fuses?
Blade-type and cartridge-type fuses.
What is the main advantage of stranded wire over solid wire?
It is more flexible and resistant to breaking.
What is the primary function of a relay coil?
To create a magnetic field that activates the switch mechanism in the relay.
What must always be the last connection and first disconnection when boosting a battery?
A ground point away from the battery.
What is the specific gravity of a fully charged battery’s electrolyte?
Approximately 1.260
What is the function of a relay in a circuit?
It allows a low-power control circuit to switch a high-power circuit.
What type of conductor is commonly used in printed circuit boards?
Etched or embedded conductors on an insulating plate.
What is the purpose of an ignition coil in a vehicle?
To convert low-voltage battery power into high voltage for spark plugs.
Why should electrical schematics be used during troubleshooting?
They help identify circuit layouts and locate faults efficiently.