The rotor of a 220 -V 60 Hz, 4-pole induction motor has a power input of 80kW is observed that the rotor emf makes 90 cycles per minute. Calculate the rotor copper loss. (a). 2kW (b). 5kW (c). 3kW (d). 4kW

The rotor of a 220 -V 60 Hz, 4-pole induction motor has a power input of 80kW is observed that the rotor emf makes 90 cycles per minute. Calculate the rotor copper loss. (a). 2kW (b). 5kW (c). 3kW (d). 4kW

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 8RQ

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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.

Question

The rotor of a 220 –V 60 Hz, 4-pole induction motor has a power input of 80kW is observed that the rotor emf makes 90 cycles per minute. Calculate the rotor copper loss.

(a). 2kW (b). 5kW

(c). 3kW (d). 4kW

The rotor of a 220 -V 60 Hz, 4-pole induction motor has a power input of 80kW is
observed that the rotor emf makes 90 cycles per minute. Calculate the rotor copper
loss.
(a). 2kW
(b). 5kW
(c). 3kW
(d). 4kW

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