Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
The external characteristic of a shunt general can be obtained directly from its characteristic. (a) internal (c) load-saturation (d) performance Load saturation characteristic of a d.c. gener tor gives relation between (a) V and I. (c) E, and I The slight curvature at the lower end of t O.C.C. of a self-excited d.c. generator is di (b) open-circuit (b) E and I (d) Vand I to (a) residual pole flux (b) high armature speed (c) magnetic inertia (d) high field circuit resistance. For the voltage built-up of a self-excited d

The external characteristic of a shunt general can be obtained directly from its characteristic. (a) internal (c) load-saturation (d) performance Load saturation characteristic of a d.c. gener tor gives relation between (a) V and I. (c) E, and I The slight curvature at the lower end of t O.C.C. of a self-excited d.c. generator is di (b) open-circuit (b) E and I (d) Vand I to (a) residual pole flux (b) high armature speed (c) magnetic inertia (d) high field circuit resistance. For the voltage built-up of a self-excited d

Introductory Circuit Analysis (13th Edition)
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
icon
Related questions
Question
OBJECTIVE TESTS – 28 1. The external characteristic of a shunt generator can be obtained directly from its characteristic. (a) shunt (b) series (c) short shunt 7. If a self-excited d.c. generator after being installed, fails to build up on its first trial run, the first thing to do is to (a) increase the field resistance (d) long shunt (a) internal (c) load-saturation (d) performance 2. Load saturation characteristic of a d.c. genera- tor gives relation between (a) V and I (c) E, and I 3. The slight curvature at the lower end of the O.C.C. of a self-excited d.c. generator is due (b) open-circuit (b) check armature insulation (b) E and Ia (d) Vand I (c) reverse field connections (d) increase the speed of prime mover. 8. If residual magnetism of a shunt generator is destroyed accidentally, it may be restored by connecting its shunt field to (a) residual pole flux (b) high armature speed (c) magnetic inertia (d) high field circuit resistance. 4. For the voltage built-up of a self-excited d.c. generator, which of the following is not an essential condition ? (a) to earth (b) to an a.c. source (b) in reverse (d) to a d.c. source. 9. The three factors which cause decrease in the terminal voltage of a shunt generator are (a) There must be some residual flux (a) armature reactances (b) Field winding mmf must aid the residual flux (b) armature resistance (c) armature leakages (d) armature reaction (c) Total field circuit resistance must be less than the critical value (e) reduction in field current (d) Armature speed must be very high. 5. The voltage build-up process of a d.c. genera- 10. If field resistance of a d.c. shunt generator is increased beyond its critical value, the tor is (b) delayed (d) infinite (a) difficult (c) cumulative 6. Which of the following d.c. generator cannot build up on open-circuit ? generator (a) output voltage will exceed its name-plate rating (b) will not build up
Transcribed Image Text:OBJECTIVE TESTS – 28 1. The external characteristic of a shunt generator can be obtained directly from its characteristic. (a) shunt (b) series (c) short shunt 7. If a self-excited d.c. generator after being installed, fails to build up on its first trial run, the first thing to do is to (a) increase the field resistance (d) long shunt (a) internal (c) load-saturation (d) performance 2. Load saturation characteristic of a d.c. genera- tor gives relation between (a) V and I (c) E, and I 3. The slight curvature at the lower end of the O.C.C. of a self-excited d.c. generator is due (b) open-circuit (b) check armature insulation (b) E and Ia (d) Vand I (c) reverse field connections (d) increase the speed of prime mover. 8. If residual magnetism of a shunt generator is destroyed accidentally, it may be restored by connecting its shunt field to (a) residual pole flux (b) high armature speed (c) magnetic inertia (d) high field circuit resistance. 4. For the voltage built-up of a self-excited d.c. generator, which of the following is not an essential condition ? (a) to earth (b) to an a.c. source (b) in reverse (d) to a d.c. source. 9. The three factors which cause decrease in the terminal voltage of a shunt generator are (a) There must be some residual flux (a) armature reactances (b) Field winding mmf must aid the residual flux (b) armature resistance (c) armature leakages (d) armature reaction (c) Total field circuit resistance must be less than the critical value (e) reduction in field current (d) Armature speed must be very high. 5. The voltage build-up process of a d.c. genera- 10. If field resistance of a d.c. shunt generator is increased beyond its critical value, the tor is (b) delayed (d) infinite (a) difficult (c) cumulative 6. Which of the following d.c. generator cannot build up on open-circuit ? generator (a) output voltage will exceed its name-plate rating (b) will not build up
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Compensation Techniques in Transmission Line
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
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,
SEE MORE TEXTBOOKS