Answer: True.
Answer analysis: This question mainly examines the working principle of DC motors and the control of their rotation direction.
The working principle of DC motors is based on the force exerted on current in a magnetic field. When current passes through the coil in the motor, the coil will rotate due to the force exerted on it in the magnetic field. The direction of this force depends on the direction of the current and the direction of the magnetic field.
In DC motors, the magnetic field is usually generated by permanent magnets or electromagnets, and its direction is relatively fixed. The direction of the current can be changed by changing the positive and negative connections of the power supply. Therefore, when we want to change the rotation direction of the DC motor, we can do so by reversing the positive and negative connections of the power supply.
Specifically, if the positive pole of the power supply is originally connected to one terminal of the motor and the negative pole is connected to another terminal, the motor will rotate in a certain direction.
At this time, if we reverse the positive and negative poles of the power supply, that is, the terminal originally connected to the positive pole is now connected to the negative pole, and the terminal originally connected to the negative pole is now connected to the positive pole, then the direction of the current will change, causing the direction of the force exerted on the motor to change, thereby changing the rotation direction of the motor.
To summarize, the statement in this question, “The direction of rotation of a DC motor can be changed by reversing the connections” is correct.