driving force of both the alternators is changed, this will result in change _________ A. frequency      C. generated emf B. back emf       D. all of the above 3. If the field of a synchronous motor is under-excited, the power factor will be _________ A. lagging        C. unity B. leading        D. more than unity 4. The power factor of an alternator is determined by _________ A. speed      C. excitation B. load         D. prime mover 5. For proper parallel operation, three-phase alternators must have the same _________ A. speed                 C. kVA rating B. voltage rating      D. excitation

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...
icon
Related questions
Question

(need help for this correct letter/answer thank you)

Choose the Correct Letter

1. An electric motor in which both the rotor and stator fields rotate with the same
speed is called _________ motor.
A. d.c.             C. synchronous
B. Schrage      D. universal

2. Two-alternators are running in parallel. If the driving force of both the alternators
is changed, this will result in change _________
A. frequency      C. generated emf
B. back emf       D. all of the above


3. If the field of a synchronous motor is under-excited, the power factor will be _________
A. lagging        C. unity
B. leading        D. more than unity


4. The power factor of an alternator is determined by _________
A. speed      C. excitation
B. load         D. prime mover


5. For proper parallel operation, three-phase alternators must have the same _________
A. speed                 C. kVA rating
B. voltage rating      D. excitation

Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
DC Generator
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
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,