3
ac
alternating
alternator
amplitude
background
cable
circuit
coil
collector
danger
distribution
education
electric
electrical
electricity
energy
engineering
equipment
frequency
generator
hertz
high
icon
illustration
industrial
phase
plug
pole
power
rotation
rotor
safety
science
scientific
sign
station
stator
steel
substation
supply
symbol
technology
three
transformer
volt
voltage
winding
wiring
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