A 4 pole DC shunt generator with wave wound armature having 383 conductors, has to supply a load of 504 lamps each of 100 W at 250 V. Allowing 12 V for the voltage drop in the connecting leads between the generator and the load with each brush drop of 2 V. The flux per pole is 30 mWb, Ra = 0.59 ohms and Rsh = 79 ohms. Calculate the %3D armature current and the speed at which the generator should be driven. The armature current The speed of machine

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A 4 pole DC shunt generator with wave
wound armature having 383 conductors, has
to supply a load of 504 lamps each of 100 W
at 250 V. Allowing 12 V for the voltage drop
in the connecting leads between the
generator and the load with each brush drop
of 2 V. The flux per pole is 30 mWb, Ra
%3D
0.59 ohms and Rsh = 79 ohms. Calculate the
armature current and the speed at which the
generator should be driven.
The armature current
The speed of machine
Transcribed Image Text:A 4 pole DC shunt generator with wave wound armature having 383 conductors, has to supply a load of 504 lamps each of 100 W at 250 V. Allowing 12 V for the voltage drop in the connecting leads between the generator and the load with each brush drop of 2 V. The flux per pole is 30 mWb, Ra %3D 0.59 ohms and Rsh = 79 ohms. Calculate the armature current and the speed at which the generator should be driven. The armature current The speed of machine
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