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Normally the test voltage applied in HV test of rotor winding of three-phase IM is
1000 V + twice the open circuit standstill voltage as measured between slip rings or secondary terminals
1000 V + twice the rated voltage with a minimum of 1500 V
1000 V + four times the open circuit standstill secondary voltage
All of these
1000 V + twice the open circuit standstill voltage as measured between slip rings or secondary terminals
Practice and solve "Normally the test voltage applied in HV test of rotor winding of three-phase IM is..." for Electrical - Economics for Engineers. The correct answer is Option A: 1000 V + twice the open circuit standstill voltage as measured between slip rings or secondary terminals. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Option **(a) **
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