Blocked rotor test on induction motors is used to find out?
Correct answer: D. all of the above
- A. leakage reactance
- B. power factor on short circuit
- C. short-circuit current under rated voltage
- D. all of the above
Explanation
The blocked-rotor test gives the equivalent leakage impedance and hence leakage reactance, directly gives the short-circuit power factor, and allows rated-voltage short-circuit current to be calculated. Thus all three listed uses are valid.
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