Answer to Question #279000 in Classical Mechanics for Raul

Question #279000

A shunt motor armature resistance 0.08Ω is connected to 120V mains. With 50A in the armature, what are the back emf and the mechanical power developed within the armature?

Expert's answer

"r=\\frac UI=2.4~\\Omega,"

"\\epsilon=I(R+r)=2.62~kV,"

"P=\\varepsilon I=131~kW."

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