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Question 7: A 415V, three-phase, 50 Hz, 4-pole, star-connected induction motor runs at 24 rev/s on full load. The rotor resistance and reactance per phase are 0.35 ohm and 3.5 ohms, respectively. The effective rotor- stator turns ratio is 0.85:1. Calculate the synchronous speed, the slip, the full load torque, the power output if mechanical losses amount to 770W, the maximum torque, the speed at which maximum torque occurs, and the starting torque.

Question 7: A 415V, three-phase, 50 Hz, 4-pole, star-connected induction motor runs at 24 rev/s on full load. The rotor resistance and reactance per phase are 0.35 ohm and 3.5 ohms, respectively. The effective rotor- stator turns ratio is 0.85:1. Calculate the synchronous speed, the slip, the full load torque, the power output if mechanical losses amount to 770W, the maximum torque, the speed at which maximum torque occurs, and the starting torque.

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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Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question 7: A 415V, three-phase, 50 Hz, 4-pole, star-connected induction motor runs at 24 rev/s on full load. The rotor resistance and reactance per phase are 0.35 ohm and 3.5 ohms, respectively. The effective rotor- stator turns ratio is 0.85:1. Calculate the synchronous speed, the slip, the full load torque, the power output if mechanical losses amount to 770W, the maximum torque, the speed at which maximum torque occurs, and the starting torque.
Transcribed Image Text:Question 7: A 415V, three-phase, 50 Hz, 4-pole, star-connected induction motor runs at 24 rev/s on full load. The rotor resistance and reactance per phase are 0.35 ohm and 3.5 ohms, respectively. The effective rotor- stator turns ratio is 0.85:1. Calculate the synchronous speed, the slip, the full load torque, the power output if mechanical losses amount to 770W, the maximum torque, the speed at which maximum torque occurs, and the starting torque.
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