DC motors Flashcards
(9 cards)
what are 5 devices that use electric motors
electric toothbrush
tv remote
electric car
electric screwdriver
fan
what is energy transfer from and to in an electric motor
electrical energy
goes to kinetic as useful energy
goes to thermal/ sound as waste energy
what is the motor effect
a current carrying wire in a magnetic field experiences a force
what does right hand screw rule show
direction of current and field
what is symbol for into the page
cross inside a circle
what is sunbol for out of the page
circle with dot inside it
what is symbol for current into the page
circle with cross in it
to the power of an i
in generation where does energy change
in a gas fired power station
in generation
what is the whole process of energy change
chemical energy stored in gas burns —> thermal boils water ——-> kinetic energy in steam ——-> turns turbines——> kinetic energy in generator ———> electrical energy
