In a DC machine, the air gap flux density is 4 Wb/m2. The area of the pole face is 2 cm × 4 cm. Find the flux per pole in the machine.
Find:
a) The power loss in the field and its percentage of the total power input for the 1350rev/min speed.
b) The power losses in the field and the field rheostat for the 1600rev/min speed.
c) The percent losses in the field and in the field rheostat at 1600rev/min speed.
Analysis:
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