2006-10-05 01:49:25 · 3 answers · asked by Anonymous in Education & Reference ➔ Higher Education (University +)
because that is what we are told
2006-10-05 01:57:22 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Not really. Those are the minimums for that segment of voltage requirements, 110 to 120, 220 to 240, 440 to 480, etc. Normal household current is usually about 117 or 118 volts.
2006-10-05 09:03:06 · answer #2 · answered by normy in garden city 6 · 0⤊ 0⤋
AC voltages are sinusoidal in propagation. the electrical machines are designed for root mean square(RMS) values of voltage which is nothing but equivalent D.C voltage.whereas insulation, transmission etc are calculated for average(AVG) values which is 1.1 times RMS value.1.1 is form factor for sinusoidal waves. (form factor = RMS value/ AVG value). so a generator may be producing 400 kV RMS but in common mans' term it will be 440kV.
2006-10-06 08:55:46 · answer #3 · answered by Anonymous · 0⤊ 0⤋