Many people think a little differently,
This is how many times I have written in government exams including BCS that electricity is the same cost, everyone will say this.
And when I came across this question in my brother-in-law's job in my life, I said in reply that it costs the same and again it costs less.
Although I was neither an electrical student nor a mechatronics student.
Is this actually true?
Now here are some tips on buying a regulator with the correct answer including the reason.
If, however, you use an electrical regulator (large size heavy) the power consumption will be the same if the fan rotates slowly or loudly. But why? Inside is a coil of resistive wire with five taps.