Electrical Principles Topic 3 Flashcards
What is energy?
The ability to do work
What is work?
The transfer of energy
Who is James Joule
He studied energy
he proved work and energy can produce heat
Define chemical energy
Energy is released during a chemical reaction
ex. digesting food
Define Electric energy
The energy of charged particles, electricity is transfered
ex. Electrical appliances
Define mechanical energy
The energy of motion, or potential to move
ex. water in a waterfall
Define thermal energy
The total kinetic energy, the faster particles moves, the more kinetic energy they have.
ex. friction
What is the law of conservation of energy
Energy cannot be created or destroyed
What is a thermocouple?
A device that converts thermal energy to electricity
How does a thermocouple work?
Two different metals heat at different rates, the electricity flows from one metal to the other.
What is the Hans Christian Oersted?
What did Micheal Faraday prove?
Types of magnets:
What is an electromagnetic?
How does a simple electric motor work?
What is a St. Louis Motor?
What is an armature?
What is the Commutator
What are the brushes?
How does the St. Louis Motor work?
Define AC and DC and explain how they are most commonly used
Primary coil
Secondary coil
Define Step-up transformers
