Question
Download Solution PDFWhich of the following is a key characteristic of a slip ring induction motor?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFSlip ring induction motors are designed to provide high starting torque with low starting current by adding external resistance in the rotor circuit during startup. This makes them ideal for applications requiring heavy starting loads like cranes, hoists, and elevators.
High efficiency at all loads → Not true; not as efficient as squirrel cage motors.
Low starting torque and high starting current → Opposite of the actual characteristic.
Operates only at synchronous speed → Incorrect; it operates below synchronous speed like all induction motors.
High starting torque and low starting current → Correct.
Last updated on Jun 7, 2025
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