Electrical Fundamentals
The rate of flow of electrons in a circuit and is measured in amperes (A).
What is Electric Current?
What does LOTO mean
What is Lockout Tagout
An electric motor is a machine that uses _______ to convert electrical energy into mechanical energy.
What is magnetism
Another name for primary control devices.
what are pilot control devices?
What does VFD stand for
What is variable frequency drive
________ current is three to five times more dangerous than ________ current of the same voltage and current value.
What is Alternating, Direct
The intentional connection of a current-carrying conductor to the earth.
What is Grounding?
The brief surge of current that occurs when an electric motor is first energized.
What is Inrush Current?
________ ________are used to monitor the temperature or changes in temperature.
What are Temperature Switches
_______ circiut includes the motor and therefore operates under higher voltage.
What is Power Circuit
What is the equation for Ohm's Law
What is E=I*R
A ball of fire that explodes from an electric short circuit.
What is an Arc fault?
The _____is the rotating part of the motor.
What is rotor
True or False?: Control relays are used to switch large motor loads.
False
___-wire control of a starter means that the starter drops out when a voltage failure occurs but does not restart when the voltage returns.
Three
Voltage (E) is the _______ that causes the flow of electric current in a circuit and is measured in volts (V).
Pressure
Class ___ fires involve energized electrical wiring or equipment such as motors and panel boxes.
C
Motor ______ refers to the turning force supplied by the motor’s shaft
What is Torque
An electromagnet used to switch contacts.
What is an electromechanical relay?
The biggest and best-known testing laboratory is the __________ __________, identified with the U L logo.
What is Underwriters' Laboratories.
These occur across components connected in series.
What is Voltage Drops?
Material or equipment should be kept at least _____ feet away from high-voltage overhead power lines.
10
The magnetic field produced by a current-carrying coil.
What is Flux?
A type of proximity sensor that detects metallic targets.
What is inductive sensor
Braking system that can hold a motor stationary once it has stopped?
What is Friction Brake