A) Calculate the input current at start-up. B) Obtain the amount of capacitor in series with the auxiliary winding for which the torque Maximum startup. Then compare the input current, auxiliary winding current and torque all at start-up in two modes with and without starter capacitor.

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Q2. A 230 V single-phase induction motor, 50 Hz,
has the following winding impedances (at rest):
Zm=28 <70° Q.
Za=42 <45°Q
A) Calculate the input current at start-up.
B) Obtain the amount of capacitor in series with
the auxiliary winding for which the torque
Maximum startup. Then compare the input
current, auxiliary winding current and torque all
at start-up in two modes with and without starter
capacitor.
Transcribed Image Text:Q2. A 230 V single-phase induction motor, 50 Hz, has the following winding impedances (at rest): Zm=28 <70° Q. Za=42 <45°Q A) Calculate the input current at start-up. B) Obtain the amount of capacitor in series with the auxiliary winding for which the torque Maximum startup. Then compare the input current, auxiliary winding current and torque all at start-up in two modes with and without starter capacitor.
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