three balanced Y-connected loads are installed on a balance three phase four-wire system
load 1 draws a total power of 6kw at unity P.F
load 2 requires 10 KVA at P.F=0.96 lagging
load 3 needs 8kw at 0.85 lagging
if the phase voltage is 135V
if each line has a resistance of 0.1 ohm and if the neutral has a resistance of 1 ohm find
a) the total power drawn by the loads
b)the combined P.F of the load
c)the total power lost in the four lines
d)the phase voltage at the source
e)the P.F which the source is operating