1.3 motors

Question 1

identify three ways that’s you could increase power or speed of a motor

Answer 1

-have the armature spinning as fast as possible
-have more magnets or stronger to interact with the axle
-have more coils around the armature to interact with the magnet

Question 2

describe the energy conversions in the following three devices
a. AC generator
b. DC generator
c. Motor

Answer 2

a. AC generator
mechanical energy to electrical energy (produced in waves)
b. DC generator
mechanical energy to electrical energy (produced in spikes)
c. Motor
electrical energy to mechanical energy

Question 3

explain how you would identify these types of generators

Answer 3

AC generator uses a slip ring to change the current while DC generator uses a commutator

Question 4

describe in point form how an AC generator produces an electrical current

Answer 4

-armature rotates so one side is going up in magnetic field

-as the side going up moves to the opposite pole, the current changes direction, causing it to go down in the magnetic field
-the slip ring allows this change to occur and for the armature to rotate continuously from mechanical to electrical energy