Unit D - Section 3 Flashcards
Chemical energy
Energy stored in chemicals; released when chemicals react
Electrical energy
The energy of charged particles; energy transferred when electrons travel from place to place
Mechanical energy
The energy possessed by an object because of its motion or potential to move
Thermal energy
The total kinetic energy of all particles in a subject; the faster a particle moves the more kinetic energy it has
Thermocouple
a device that converts thermal energy to electrical energy
What does a thermocouple consist of
Two different metals that when joined together conduct heat at different rates
Why are thermocouples useful
For measuring temperatures in areas that are difficult to access
What the opposite of a thermocouple
Heaters and ovens because they convert electrical energy to thermal energy
How are electromagnets made
Made by winding a current carrying wire around a metal core
Commutator
A split ring that breaks the flow of electricity for a moment and then reverses the connection of coil
Brushes
To reverse the flow of electricity through the electromagnetic coil
Armature
Is the rotating shaft with the coil rapped around it
What is the commutators role
Helps the the armature to spin continuously
Direct current (DC)
It’s called direct cuz the electricity flows in one direction
Alternating current (AC)
Called alternating cuz it flows back and fourth 60 times per second
