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Terms in this set (34)
What is a bus bar?
A primary power distribution point connected to a main power source.
What is a capacitor?
A device capable of storing an electrical charge. It is an electrical shock absorber controlling voltage spikes that would affect other components.
What is a circuit breaker?
An electromagnetic or thermally activated device that opens a circuit when the current exceeds a predetermined amount.
What is a diode?
An electronic device that restricts current flow chiefly to one direction.
What is a ground?
A metallic connection with the earth to establish ground potential.
Where is an earth ground connected?
It is connected to the earth or to the negative battery terminal.
Where is a vehicle chassis ground connected?
It is connected to the negative battery terminal through a connection with the vehicle chassis.
What is a Relay Coil?
Device using an electromagnet to control a single relay contact or sets of relay contacts. When current flows through the relay coil it is energized, changing the contacts to the opposite of their original position.
What is a relay contact?
It is controlled by a relay coil, contacts can be either normally open (NO) or normally closed (NC).
What is a wire connection?
It is a common point where two wires are joined.
An open circle indicates a screw terminal connection.
What is a wiring harness?
A grouping of several wires together in a bundle. A wiring harness may have only two connectors or branch into several.
What moves electrical current and signals from one point to another?
What device is capable of providing resistance in an electrical circuit, and is used to set up a specific circuit condition by controlling current flow or setting up a voltage at a point within a circuit?
What is a lamp?
a lamp is just a lamp.
What does a momentary switch do?
It closes a circuit when it is pressed. (I.E. an electrical trigger)
What device is used to open or close the current path of one or more circuits?
What is a solenoid?
An electromagnet coiled around a movable plunger (armature), when current energizes the electromagnet the plunger moves to the strongest magnetic field which is the center of the coil.
What do you call a three-electrode semiconductor used either as a switch or an amplifier (Low power only)? Once turned on at Gate It will allow current to flow through the other two leads.
What is a semiconductor that's basic purpose is to function as a switch that can turn on or off and control large amounts of power?
A silicon controlled rectifier.
What is a point accessible on a component to take measurements with a BOB/Multimeter?
A test point.
What is used for tracing a circuit that continues onto a different sheet?
A call out bubble.
What is the definition of electricity?
A fundamental property of matter, associated with atomic particles whose movements develop fields of force and generate kinetic or potential energy.
What is Voltage? (abbreviated as volts or V)
It is the pressure or force that drives the electrical charge from one pole to another.
What is the strength of the electrical charge?
Current (abbreviated as Amperes, Amps or A). The current is what actually does the work.
What is resistance?
It is opposition to the flow of current. (expressed as ohms or Ω.)
What component is used to direct the flow of electricity.
Conductor-component used to direct the flow of electricity. (I.e. wiring harness, cables.)
What is continuity?
the constant flow of electricity without interruption.
What generates the positive and negative charges?
A power supply (I.e. battery, alternator/generator.)
What draws current in order to work?
What do you use to measure voltage, current, or ohms?
What is a circuit?
A circuit is a closed course allowing electricity to flow between the positive and negative poles.
What is the Current Path?
Start at the negative terminal and work towards the positive.
What is electron theory?
This states that the electrons (-) travel towards the protons (+).
What is a Short Circuit?
Sometimes, some sort of conductor will touch between 2 wires causing a short circuit. The charge will travel along the short circuit instead because it is the easiest path between the terminals.
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