Which is of the following data is required to draw the circle diagram for an induction motor ?
Correct answer: D. Block rotor test, no-load test and stator resistance test
- A. Block rotor test only
- B. No load test only
- C. Block rotor test and no-load test
- D. Block rotor test, no-load test and stator resistance test
Explanation
The no-load test provides the shunt-branch and rotational-loss data, while the blocked-rotor test provides series impedance data. The stator resistance test is additionally needed for separating stator copper loss and accurately constructing the circle diagram.
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