Tehonkäyrä
Tehonkäyrä, a Finnish term often translated as "power curve," refers to a graphical representation of a device's or system's performance over a range of operating conditions. Primarily, it illustrates the relationship between input power and output power, or sometimes between output power and another relevant variable such as speed, frequency, or voltage. The shape of the tehonkäyrä reveals crucial information about efficiency, optimal operating points, and potential limitations.
For instance, in the context of an electric motor, a tehonkäyrä might show how the motor's power