2. A 30 induction motor has a starting torque of 1.75 pu and a maximum torque of 2.5 pu when operated from rated voltage and frequency. The full-load torque is considered as I pu of torque. Neglect stator resistance. (a) Determine the slip at maximum torque. (b) Determine the slip at full-load torque. (c) Determine the rotor current at starting in per unit - consider the full-load rotor current as 1 pu. (d) Determine the rotor current at maximum torque in per unit of full- load rotor current.

2. A 30 induction motor has a starting torque of 1.75 pu and a maximum torque of 2.5 pu when operated from rated voltage and frequency. The full-load torque is considered as I pu of torque. Neglect stator resistance. (a) Determine the slip at maximum torque. (b) Determine the slip at full-load torque. (c) Determine the rotor current at starting in per unit - consider the full-load rotor current as 1 pu. (d) Determine the rotor current at maximum torque in per unit of full- load rotor current.

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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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

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2. A 30 induction motor has a starting torque of 1.75 pu and a maximum
torque of 2.5 pu when operated from rated voltage and frequency. The
full-load torque is considered as 1 pu of torque. Neglect stator resistance.
(a) Determine the slip at maximum torque.
(b) Determine the slip at full-load torque.
(c) Determine the rotor current at starting in per unit - consider the
full-load rotor current as 1 pu.
(d) Determine the rotor current at maximum torque in per unit of full-
load rotor current.

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