Final answer:
To detect grounded windings, measure resistance with a multimeter between the winding's connection points and the ground. A properly isolated winding shows high resistance, while a grounded winding shows low resistance or continuity.
Step-by-step explanation:
Grounded windings can be detected by measuring the resistance with a multimeter between the winding and the ground. When using a multimeter to check for a grounded winding, you would typically measure the resistance between the winding's connection points and the physical ground of the system. If the winding is properly isolated, the resistance should be very high, often reading as an open circuit. However, if the winding is grounded, there will be continuity, and the multimeter will read a much lower resistance, sometimes close to zero ohms, indicating an electrical path between the winding and the ground.
It's important to ensure that the system is powered off and that all capacitors are fully discharged before attempting to measure the resistance to prevent equipment damage or personal injury.