How can it be determined if a transformer winding has some of its turns shorted together?

The correct choice indicates that a transformer with shorted turns in its winding will get hot during normal operation. This happens because the shorted turns create a condition where the electrical current does not follow the usual path through the winding. Instead, a portion of the current bypasses part of the winding, resulting in increased resistance and, therefore, generating heat due to resistive losses.

When a winding has shorted turns, it creates an imbalance in the transformer’s magnetic field, leading to an increase in current in the affected areas. As the current increases, so does the heat produced, which can lead to thermal damage if it continues unchecked. Monitoring the temperature of the transformer during operation can provide insights into the condition of its windings.

The other options do not effectively indicate the presence of shorted turns. Measuring the input voltage with an ohmmeter does not provide relevant information on the operation of the transformer or its shorted condition since an ohmmeter is designed to measure resistance rather than operational voltage. An output voltage that is high may be misleading as it could be a characteristic of the transformer depending on its design, not necessarily indicative of a fault like shorted turns. Similarly, a transformer that operates normally without issues would suggest that the windings are