The nameplate of a 3-phase asynchronous motor, A-connected, has the following indications: Voltage: 380V Line current: I=7 A Useful power: 3.3 kW cosp=0.8 Speed:720 r.p.m Frequency: 50 Hz At nominal operation, calculate: 1) The number of poles (2p) and the slip (s). 2) The efficiency of the motor. 3) The power transmitted to the rotor (P) knowing that the mechanical losses are negligible. 4) The rotor Joule's losses (P₁₂). 5) The gross torque (T₂).

The nameplate of a 3-phase asynchronous motor, A-connected, has the following indications: Voltage: 380V Line current: I=7 A Useful power: 3.3 kW cosp=0.8 Speed:720 r.p.m Frequency: 50 Hz At nominal operation, calculate: 1) The number of poles (2p) and the slip (s). 2) The efficiency of the motor. 3) The power transmitted to the rotor (P) knowing that the mechanical losses are negligible. 4) The rotor Joule's losses (P₁₂). 5) The gross torque (T₂).

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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