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Engine : Electricity - 734/1386
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The torque-speed and current-speed curves for a three-phase induction motor with a squirrel cage rotor are shown in figures "A" and "B" of the illustration. Which of the following statements is true concerning the depicted curves? EL-0056
A) Rated torque and rated current occur at approximately 20% slip.
B) The starting current is nearly 1.5 times the normal full load current value.
C) Starting current is approximately 4.75 times the normal full load current value.
D) The pull-up point on the torque curve is about 20% of the normal full load torque value.
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Illustration EL-0056

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