Context: Currents induced into this winding provide the rotor magnetic field. The shape of the rotor bars determines the speed-torque characteristics. At low speeds, the current induced in the squirrel cage is nearly at line frequency and tends to be in the outer parts of the rotor cage. As the motor accelerates, the slip frequency becomes lower, and more current is in the interior of the winding. By shaping the bars to change the resistance of the winding portions in the interior and outer parts of the cage, effectively a variable resistance is inserted in the rotor circuit. However, the majority of such motors have uniform bars.

Question: What determines the properties of speed and torque?
Answer: shape of the rotor bars

Question: At high speed, where is the most current?
Answer: interior of the winding

Question: Is the current frequency higher or lower at high speed?
Answer: lower

Question: Changing the shapes of the bars creates what?
Answer: variable resistance

Question: Where can variable resistance be created?
Answer: rotor circuit

Question: What doesn't determine the properties of speed and torque?
Answer: Unanswerable

Question:  At low speed, where is the most current?
Answer: Unanswerable

Question:  Is the non-current frequency higher or lower at high speed?
Answer: Unanswerable

Question: Not changing the shapes of the bars creates what?
Answer: Unanswerable

Question:  Where can variable resistance not be created?
Answer: Unanswerable