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?

1
Expert's answer
2021-12-13T10:34:38-0500

r=UI=2.4 Ω,r=\frac UI=2.4~\Omega,

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

P=εI=131 kW.P=\varepsilon I=131~kW.


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