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categoryهندسة كهربائية schoolبكالوريوس event_available2026-07-14

السؤال

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A 208-V two-pole 60-Hz Y-connected wound-rotor induction motor is rated at 15 hp. Its equivalent circuit components are R₁ = 0.225 R2 = 0.125 XM= 15.0 X₁ = 0.425 X2 = 0.425 Pmech = 300 W Pmisc = 0 Pcore = 250 W For a slip of 0.075, find (40%) (a) The line current IL (b) The stator copper losses PSCL (c) The air-gap power PAG (d) The power converted from electrical to mechanical form Pconx (e) The induced torque Tind (f) The load torque Tload (g) The overall machine efficiency (h) The motor speed in revolutions per minute and radians per second (i) What is the slip at the pullout torque? (j) What is the pullout torque of this motor?

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