240-V, 50 Hz, 2pole, 4HP three phase Induction Motor is drawing 10A at 0.9 PF lagging runs at a speed of 251 rad/sec. The stator copper losses are 250W, the core losses are 150 W, and the rotor copper losses are 2% of the power entering the rotor. Friction and windage losses are not neglected. Calculate the following. a. Efficiency of the rotor. b. Efficiency of the motor. c. Mechanical efficiency.
240-V, 50 Hz, 2pole, 4HP three phase Induction Motor is drawing 10A at 0.9 PF lagging runs at a speed of 251 rad/sec. The stator copper losses are 250W, the core losses are 150 W, and the rotor copper losses are 2% of the power entering the rotor. Friction and windage losses are not neglected. Calculate the following. a. Efficiency of the rotor. b. Efficiency of the motor. c. Mechanical efficiency.
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...
Related questions
Question
240-V, 50 Hz, 2pole, 4HP three phase Induction Motor is drawing 10A at 0.9 PF
lagging runs at a speed of 251 rad/sec. The stator copper losses are 250W, the
core losses are 150 W, and the rotor copper losses are 2% of the power entering the rotor. Friction and windage losses are not neglected. Calculate the following.
a. Efficiency of the rotor.
b. Efficiency of the motor.
c.
d. Torque produced by the motor
e. Speed of the motor if the load torque doubles.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 8 steps with 9 images
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.Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,