Select the correct answer for each of the following statementsBook Source: Electricity 3 | 10th Edition ISBN-13:9781111646738 ISBN:1111646732 Authors:Jeffrey J. Keljik 5. Electrical polarity at the brushes may be changed bya. reversing the rotation of the armature.b. reversing the direction of the field current.c. either a or b d. neither a nor bB. Select the correct answer to questions 6 through 9 from the following list, and write itin the space provided.power sourceonly onealways strength of the field fluxspeed of the armature either6. In addition to armature rotation, the output voltage varies with the7. One factor limiting an increase in output voltage is the8. A change in the speed of rotation of the armaturedecreasesometimesincreasesearinresults in achange in the output voltage.9. If the field poles are saturated, an increase in the field current does not cause a(n)in the output voltage.

Since you have posted multiple questions, we will provide the solution only to the first question as…

Answered: 5. Electrical polarity at the brushes…

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Electrical Engineering

5. Electrical polarity at the brushes may be changed by

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 35RQ

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Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

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Select the correct answer for each of the following statements

Book Source: Electricity 3 | 10th Edition ISBN-13:9781111646738 ISBN:1111646732 Authors:Jeffrey J. Keljik

5. Electrical polarity at the brushes may be changed by
a. reversing the rotation of the armature.
b. reversing the direction of the field current.
c. either a or b

d. neither a nor b
B. Select the correct answer to questions 6 through 9 from the following list, and write it
in the space provided.
power source
only one
always strength of the field flux
speed of the armature either
6. In addition to armature rotation, the output voltage varies with the
7. One factor limiting an increase in output voltage is the
8. A change in the speed of rotation of the armature
decrease
sometimes
increase
searin
results in a
change in the output voltage.
9. If the field poles are saturated, an increase in the field current does not cause a(n)
in the output voltage.

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