Answer / ankamsreekar

In AC the voltage mentioned is RMS value. the RMS value is
the product of Form factor and average value. the Form
factor for the sine wave is 1.11. so all the voltages are
multipliers of the factor 1.11.

EX in Alternator E(rms)= 4.44*Kd*Kp*Flux*HZ*RPM

Answer / ankur

Vrms=Vpeak/sqrt(2)
Vavg=(2/pi)*Vpeak
Vpeak=(pi/2)*Vavg
so,
Vrms=(pi/(2*1.414))*Vavg
to get a average of 100Volt
the rms comes to be a multiple of 111V
so all voltages are multiple of 1.11
@Sonal: even 132 is 12*11

Answer / sonal

BUT how is 132 a multiple of 1.11. plz help

Answer / guest

In AC the voltage mentioned is RMS value. the RMS value is
the product of Form factor and average value. the Form
factor for the sine wave is 1.11. so all the voltages are
multipliers of the factor 1.11.

EX in Alternator E(rms)= 4.44*Kd*Kp*Flux*HZ*RPM

Answer / anonymous

Bcoz there is a
loss of 10%
while
transmission of
current through
cable lines. So
instead of
transmitting
current in
multiples of 10,
its 10% extra is
transmittd dat
is in multiples
of 11 in order
to compensate d
loss.

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