SCIENCE 1119 CU 3 PART 1

short circuit

• reverses polarity of an armature
• current flows multiple paths
• current passes back to source without reaching load
• change direction

transformer

• rate at which work is performed
• converts mechanical energy into electrical energy
• changes voltage or amperage of current
• reverses polarity of an armature

electric generator

• converts mechanical energy into electrical energy
• decreases voltage; increases amperage
• reverses polarity of an armature
• increases voltage; decreases amperage

armature

• circuit interrupter
• flows in one direction
• electromagnet
• current flows multiple paths

power

• circuit interrupter
• changes direction
• rate at which work is performed
• current passes back to source without reaching load

series circuit

• circuit interrupter
• reverses polarity of an armature
• current flows a single path
• change voltage or amperage of current

switch

• connects cathode to anode
• changes direction
• circuit interrupter
• reverses polarity of an armature

direct current

• increases voltage; decreases amperage
• flows in different direction
• flows in one direction
• changes direction

commutator

• changes direction
• connects cathode to anode
• reverses polarity of an armature
• circuit interrupter

step-down transformer

• changes direction
• current flows multiple paths
• increases amperage; decreases voltage
• decreases amperage; increases voltage