Electrical_Power_Drivers-_ET3026WB-Chapt20_example_questions

Dchangeintheinputvoltage mine

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Unformatted text preview: quadrant represents breaking operation? a) 1 b) 2 c) 3 d) 4 mine Which of the following statements doesn’t cause a change in the torque‐speed characteristic of a machine? a) Change in the input frequency. b) Change in the mechanical load. c) Interchange two of the three phase input leads. d) Change in the input voltage. mine With which of the following ways can one keep the shaft torque of an induction motor constant at all speeds? a) With a change in the input frequency only. b) With a change in the...
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