Which winding of a motor is most likely to indicate the highest ohms reading?

The start winding of a motor is typically designed to operate for a short period during the initial phase of motor startup, while the run winding takes over once the motor reaches a certain speed. The start winding generally has a higher resistance compared to the run winding because it is often comprised of thinner wire with more turns. This higher resistance is necessary to develop a greater starting torque while limiting the current during the motor startup phase.

As a result, when measuring the ohms of resistance, the start winding will likely show the highest reading. In contrast, the run winding is constructed to handle continuous operation and is typically more efficient, thus exhibiting a lower resistance. The common winding typically refers to a shared connection point in the motor's circuitry, and its resistance may also be lower than that of the start winding. “Any winding” as a choice does not specifically address the distinction in resistance values that can be observed among the various windings.

Overall, understanding the fundamental design and operational roles of these windings clarifies why the start winding would indicate the highest ohms reading in this context.