Physics · Electrical Machines
What is the primary effect of inserting an external resistance into the rotor circuit of a slip-ring induction motor?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It decreases the rotor copper losses at startup
- 2It increases the full-load speed
- 3It increases the starting torque✓
- 4It increases the pull-out torque
Correct answer
It increases the starting torque
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