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3. The no-load current of an induction motor with 75kW of output power, which is connected to a 3-phase system with the line voltage of 4000V, 60HZ, is one-third and starting current is six times the full-load current. The motor is rotating at 900rpm. Calculate (i) the approximate values of the full-load current, starting current, and no-load current (ii) the output torque, synchronous speed, and rotor power (air gap power) given that the slip is 2%. Ignore frictional losses.

3. The no-load current of an induction motor with 75kW of output power, which is connected to a 3-phase system with the line voltage of 4000V, 60HZ, is one-third and starting current is six times the full-load current. The motor is rotating at 900rpm. Calculate (i) the approximate values of the full-load current, starting current, and no-load current (ii) the output torque, synchronous speed, and rotor power (air gap power) given that the slip is 2%. Ignore frictional losses.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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3. The no-load current of an induction motor with 75kW of output power, which is connected to a 3-phase system with the line voltage of 4000V, 60HZ, is one-third and starting current is six times the full-load current. The motor is rotating at 900rpm. Calculate (i) the approximate values of the full-load current, starting current, and no-load current (ii) the output torque, synchronous speed, and rotor power (air gap power) given that the slip is 2%. Ignore frictional losses.
Transcribed Image Text:3. The no-load current of an induction motor with 75kW of output power, which is connected to a 3-phase system with the line voltage of 4000V, 60HZ, is one-third and starting current is six times the full-load current. The motor is rotating at 900rpm. Calculate (i) the approximate values of the full-load current, starting current, and no-load current (ii) the output torque, synchronous speed, and rotor power (air gap power) given that the slip is 2%. Ignore frictional losses.
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