(b) A three-phase, 30 kW, 50 Hz, 380 V, SCIM motor draws a line current of 60 amperes when it is full-loaded. DC test, open-circuit test and short-circuit test carried out at the motor stator side give the following results: DC test Open-circuit test Short-circuit test Line Current 6 A 10 A 60 A Line Voltage Wattmeter reading 2 V 380 V 50 V 900 W 3000 W -- Assume that AC and DC resistances of the motor are the same. Estimate: (i) The per-phase equivalent stator and rotor resistances of the motor; (ii) The motor efficiency at the full load condition; and (iii) The motor maximum efficiency and the loading level at which the maximum efficiency occurs.
(b) A three-phase, 30 kW, 50 Hz, 380 V, SCIM motor draws a line current of 60 amperes when it is full-loaded. DC test, open-circuit test and short-circuit test carried out at the motor stator side give the following results: DC test Open-circuit test Short-circuit test Line Current 6 A 10 A 60 A Line Voltage Wattmeter reading 2 V 380 V 50 V 900 W 3000 W -- Assume that AC and DC resistances of the motor are the same. Estimate: (i) The per-phase equivalent stator and rotor resistances of the motor; (ii) The motor efficiency at the full load condition; and (iii) The motor maximum efficiency and the loading level at which the maximum efficiency occurs.
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
100%
answer all
![(b) A three-phase, 30 kW, 50 Hz, 380 V, SCIM motor draws a line current of 60 amperes
when it is full-loaded. DC test, open-circuit test and short-circuit test carried out at the
motor stator side give the following results:
DC test
Open-circuit test
10 A
Short-circuit test
Line Current
Line Voltage
Wattmeter reading
6 A
380 V
900 W
60 A
50 V
3000 W
2 V
--
Assume that AC and DC resistances of the motor are the same. Estimate:
(i) The per-phase equivalent stator and rotor resistances of the motor;
(ii) The motor efficiency at the full load condition; and
(iii) The motor maximum efficiency and the loading level at which the maximum
efficiency occurs.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9e802461-53da-4819-ae26-73b713ef5cda%2Fc2e1da9a-9454-40a4-868f-6369bf426272%2Fzwh5vkl_processed.png&w=3840&q=75)
Transcribed Image Text:(b) A three-phase, 30 kW, 50 Hz, 380 V, SCIM motor draws a line current of 60 amperes
when it is full-loaded. DC test, open-circuit test and short-circuit test carried out at the
motor stator side give the following results:
DC test
Open-circuit test
10 A
Short-circuit test
Line Current
Line Voltage
Wattmeter reading
6 A
380 V
900 W
60 A
50 V
3000 W
2 V
--
Assume that AC and DC resistances of the motor are the same. Estimate:
(i) The per-phase equivalent stator and rotor resistances of the motor;
(ii) The motor efficiency at the full load condition; and
(iii) The motor maximum efficiency and the loading level at which the maximum
efficiency occurs.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
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)](https://www.bartleby.com/isbn_cover_images/9780133923605/9780133923605_smallCoverImage.gif)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
![Delmar's Standard Textbook Of Electricity](https://www.bartleby.com/isbn_cover_images/9781337900348/9781337900348_smallCoverImage.jpg)
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
![Programmable Logic Controllers](https://www.bartleby.com/isbn_cover_images/9780073373843/9780073373843_smallCoverImage.gif)
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
![Introductory Circuit Analysis (13th Edition)](https://www.bartleby.com/isbn_cover_images/9780133923605/9780133923605_smallCoverImage.gif)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
![Delmar's Standard Textbook Of Electricity](https://www.bartleby.com/isbn_cover_images/9781337900348/9781337900348_smallCoverImage.jpg)
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
![Programmable Logic Controllers](https://www.bartleby.com/isbn_cover_images/9780073373843/9780073373843_smallCoverImage.gif)
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
![Fundamentals of Electric Circuits](https://www.bartleby.com/isbn_cover_images/9780078028229/9780078028229_smallCoverImage.gif)
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
![Electric Circuits. (11th Edition)](https://www.bartleby.com/isbn_cover_images/9780134746968/9780134746968_smallCoverImage.gif)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
![Engineering Electromagnetics](https://www.bartleby.com/isbn_cover_images/9780078028151/9780078028151_smallCoverImage.gif)
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,