Basics
What is the unit of electric current?
Ampere
What tool is used to strip the insulation from electrical wires?
Wire stripper
What color wire is typically used for grounding in electrical systems?
Green or bare copper
What does NEC stand for?
National Electrical Code
What is the purpose of a transformer in an electrical system?
To change the voltage level in an electrical circuit
What device is used to measure electric potential difference?
Voltmeter
Which tool is essential for checking if a circuit is live?
Multimeter
Name the organization responsible for setting electrical safety standards in the workplace.
Occupational Safety and Health Administration (OSHA)
A relay contact with one pole, two throws, and one break is abbreviated as
SPDT-SB
What is the main function of a capacitor in a circuit?
To store and release electrical energy
Name the law that states "The total current entering a junction equals the total current leaving the junction."
Kirchhoff's Current Law
What is the purpose of a conduit bender?
To bend electrical conduits
What personal protective equipment should electricians wear when working on live circuits?
Insulated gloves and safety goggles
Diagram that shows the connection of all components in a piece of equipment.
What is A Wiring diagram
What is three-phase power, and where is it commonly used?
A type of polyphase system used for distributing alternating current, commonly used in industrial and large commercial settings
What is the formula for electrical power?
P = VI (Power = Voltage x Current)
Name the tool used to fish wires through walls and electrical conduit.
Fish tape
What does the acronym GFCI stand for?
Ground Fault Circuit Interrupter
Control device that uses a small control current to energize or de-energize the load connected to it.
What is A Contactor
The output of a 3phase AC generator results in three output voltages ___° out of phase with each other.
What is 120 degrees
What is the unit of resistance?
Ohm
What is a circuit breaker tester used for?
To test the functionality of circuit breakers
What is the purpose of a lockout/tagout procedure?
To ensure that electrical equipment is properly shut off and not started up again before the completion of maintenance or repair work.
Field windings are electromagnets used to produce the ___ field in a generator.
What is Magnetic
Explain what a PLC is and its typical use.
Programmable Logic Controller, used for automation of industrial electromechanical processes