When a drum switch is placed in the reverse position, which of the following statements is true?

When a drum switch is placed in the reverse position for an electric motor, the connections between the line conductors (L1, L2, L3) and the motor terminals (T1, T2, T3) are altered to change the direction of the motor's rotation. In this context, the correct association is that L1 is connected to T3, L2 is connected to T1, and L3 is connected to T2.

This configuration is based on the principle of reversing the phase sequence supplied to the motor. By swapping L1 and L3, the magnetic field generated by the motor changes direction, resulting in the motor rotating in the reverse direction. Understanding this is crucial, as proper wiring ensures the motor runs safely and effectively in the intended direction.

The connections described in the other options would not create the necessary phase changes needed for reversing the motor's rotation, demonstrating the critical nature of the configurations in drum switches when it comes to motor control.