p33_066 - 2 66. The effective resistance Reff satisfies...

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Unformatted text preview: 2 66. The effective resistance Reff satisfies Irms Reff = Pmechanical , or Reff = Pmechanical (0.100 hp)(746 W/hp) = = 177 Ω . 2 Irms (0.650 A)2 This is not the same as the resistance R of its coils, but just the effective resistance for power transfer 2 from electrical to mechanical form. In fact Irms R would not give Pmechanical but rather the rate of energy loss due to thermal dissipation. ...
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