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? Illustration EL-0056

Correct Answer: Option B — Starting current is approximately 4.75 times the normal full load current value.

Standard squirrel cage induction motor characteristics, as defined in IEEE 45, show high inrush current during startup. Analyzing the provided EL-0056 curves, the current-speed plot indicates that at zero speed (locked rotor), the starting current is approximately 4.75 times the rated full load current, consistent with NEMA design standards.