1. (1.1.1.As shown in figure "B" of the illustration, with a digital multimeter set up as an ohmmeter, what set of readings would be consistent with an open in a phase of the single circuit, delta-connected stator windings as shown? Illustration EL-0201

Correct Answer: Option C — T1 to T2: "3.6 ohms"; T2 to T3: "1.8 ohms"; T3 to T1: "1.8 ohms"

In a delta-connected stator, an open circuit in one phase changes the equivalent resistance measured between leads due to parallel circuit paths. IEEE 45 troubleshooting theory shows that measuring across the open phase yields double the standard phase resistance because the two remaining paths are in series.