Answered: A three-phase, 440-V, 60-Hz,…

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...

See similar textbooks

Related questions

Concept explainers

Question

A three-phase, 440-V, 60-Hz, wye-connected induction motor takes a stator current of 50 A at 0.8 power
factor while running at its rated speed of 855 rpm. The stator loss is 2500 W, and the rotational losses
are 3200 W. Calculate the efficiency of the motor.

Expert Solution

Step 1

Slip = (NS-Nr/Ns)×100

Input power = sqrt(3)×line voltage ×line current ×power factor.

Rotor input = stator input - stator losses.

Power developed = rotor input - rotor cupper losses.

Output power = power developed- rotational losses.

Efficiency = output power/input power.

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions