An 8 pole, $50 \mathrm{~Hz}, 3$ phase, slip-ring induction motor has an effective rotor resistance of $0.08 \Omega$ per phase. Its speed at maximum torque is 650 rpm . The additional resistance per phase that must be inserted in the rotor to achieve maximum torque at start is $\_\_\_\_$ $\Omega$. (Round off to 2 decimal places). Negleet magnetizing eurrent and stater leakage impedanee. Consider equivalent eireuit parameters referred to stator.

GATE 2021 Electrical Engineering PYQ — Electrical Machines

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Electrical Machines · Induction Motors

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Induction Motors has appeared in GATE Electrical Engineering 70 times across 28 years (2022, 2023, 2024, 2025, 2026, ...).