How does increasing a motor's supply voltage typically affect its performance?

Increasing a motor's supply voltage typically results in an increase in both speed and torque, but it also introduces the risk of overheating. When the supply voltage is increased, the available voltage for the motor leads to a higher current draw, assuming the load remains the same. This increase in current can produce more torque, as torque is often proportional to current in many types of motors, particularly in DC and induction motors.

At the same time, higher voltage can lead to higher speeds because motors generally accelerate until they reach their no-load speed, which is influenced by supply voltage. However, if the motor operates at too high a voltage without proper cooling measures, it can overheat due to increased power losses, especially in the form of resistive heating in the windings.

In summary, while increasing the supply voltage can enhance both speed and torque capabilities, it necessitates careful management of thermal limits to prevent damage to the motor and ensure reliable performance.