question archive A 20 kW compound generator works on full load with terminal voltage of 230 V
A 20 kW compound generator works on full load with terminal voltage of 230 V
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A 20 kW compound generator works on full load with terminal voltage of 230 V.
The armature, series and shunt field resistances are 0.1, 0.05 and 115 ohm respectively.
Calculate:
a) The generated e.m.f , if connected short shunt.
b) The generated e.m.f, if connected long shunt.
c) If the machine is connect short shunt, the iron and friction losses at rated power equal
to 850 W. calculate the mechanical efficiency, electrical efficiency and commercial
efficiency.
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