Example 28.10. A shunt generator gave the following open-circuit characteristic: Field current: 0.5 1.0 54 107 1.5 152 2.0 2.5 3.0 3.5 A 185 210 230 245 V and 80 respectively. Calculate (a) the voltage to The armature and field resistances are 0.1 which the machine will excite when run as a shunt generator at the same speed. (b) The volts lost due to armature reaction when 100 A are passing in the armature at a terminal volt- age of 175 V.