Explain the linear relationship between ia and phi

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Reference no: EM13255028

A series-connected dc motor has RF+RA = .6 ohmns and draws IA = 40 A from the dc source voltage VT = 220 V, while running at 900 rpm. What is the speed for IA = 20 A? Assume a linear relationship between IA and phi.

Reference no: EM13255028

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