Electrical_Power_Drivers-_ET3026WB-Chapt15_example_questions

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Unformatted text preview: d when the breakdown torque is reached? a) 775rpm. b) 811rpm. c) 900rpm. d) 89rpm. 15‐2 (I1) A wye‐connected squirrel‐cage motor having a synchronous speed of 900rpm has a stator resistance of 0.7Ω and an equivalent rotor resistance of 0.5Ω. The total leakage reactance is 5Ω and the lineto‐neutral voltage is 346V. What is the current I1 at the breakdown torque? a) 78.6A. b) 90.8A c) 45.4A. d) 45.7A. 15‐2 (Tb) A wye‐connected squirrel‐cage motor having a synchronous sp...
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