Under any load condition, does a motor draw only the current needed to maintain rated RPM?

A motor typically draws only the current necessary to maintain its rated RPM when under steady-state conditions and operating under a specific load. This means that if the load on the motor increases, the motor will draw more current to produce the additional torque needed to maintain its operational speed. Conversely, if the load decreases, the current drawn by the motor will also decrease accordingly.

The relationship between load and current draw is critical for understanding motor operation; a motor at full load will require more current than when it is under a light load. However, at rated RPM with a stable load, the motor aims to draw only what is necessary to sustain that speed economically and efficiently.

As for the other options, the statement about it being false or not always true does not accurately represent the behavior of a motor under varying load conditions, as it indeed tries to draw an appropriate current that corresponds to its operational demands. The statement suggesting that the current is only drawn at full load misstates the motor's functionality, as it is meant to adjust current draw with load changes, not limit it to full load scenarios alone.