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Induction Motor Why induction motor IM Robust; No brushes. No contacts on rotor shaft High Power

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Induction Motor Why induction motor IM Robust; No brushes. No contacts on rotor shaft High Power

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    20. Example 5.3 The following test results are obtained from a three-phase 60 hp, 2200 V, six-pole, 60 Hz squirrel-cage induction motor. (1) No-load test: Supply frequency = 60 Hz, Line voltage = 2200 V Line current = 4.5 A, Input power = 1600 W (2) Blocked-rotor test: Frequency = 15 Hz, Line voltage = 270 V Line current = 25 A, Input power = 9000 W (3) Average DC resistance per stator phase: 2.8 ? (a) Determine the no-load rotational loss. (b) Determine the parameters of the IEEE-recommended equivalent circuit (c) Determine the parameters (Vth, Rth, Xth) for the Thevenin equivalent circuit of Fig.5.16.

    25. PERFORMANCE CHARACTERISTICS

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