Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 10, Problem 5RQ
Name five conditions that must be met for running conductors in parallel.
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Explain what it means to install "conductors in parallel," and give five conditions that must be satisfied when this is done.
Low-voltage conductors. a. are not powerful enough to cause death from electrocution b. must exceed 480V to cause death C. are responsible for most electrocution deaths due to the frequency of contact d. are unlikely to cause injury if rubber-soled shoes are worn
PLEASE HELP ME CHOOSE WHAT CORRECT LETTER OR ANSWER
1. The direction of induced voltage in a conductor can be changed by
a. increasing the field strength.
b. reversing the field direction.
c. increasing conductor length.
d. decreasing conductor size.
e. reversing meter connections.
2. Direct current can be supplied to a load by a loop of wire rotating
through a field with the use of
a. slip rings.
b.
c. brushes.
electromagnets.
d. commutator.
e. conductor.
3. Induced voltage can be increased in magnitude by
a. increasing the number of lines cut per second.
b. using a commutator.
c. using slip rings.
d. decreasing conductor length.
e. properly applying the left-hand generator rule.
Chapter 10 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 10 - What is the maximum temperature rating of Type...Ch. 10 - 2. Name two types of conductor insulation designed...Ch. 10 - A 10 AWG copper conductor with Type THW insulation...Ch. 10 - 4. Six 1/0 aluminum conductors are to be run in a...Ch. 10 - Name five conditions that must be met for running...Ch. 10 - What is the largest solid (nonstranded) conductor...Ch. 10 - Can Type TW cable be used in an area that has an...Ch. 10 - How is the grounded conductor in a flat...Ch. 10 - What three colors are ungrounded conductors not...Ch. 10 - Twenty-five 12 AWG copper conductors are run in...
Ch. 10 - A single-hase load is located 2800 ft from its...Ch. 10 - It is decided to use parallel 0000 conductors to...Ch. 10 - A three-phase motor operates on 480 V and is...Ch. 10 - You have been hired by a company to connect an...Ch. 10 - 2. You are a journeyman electrician in an...Ch. 10 - You are an electrician working in an industrial...Ch. 10 - Using the above example, determine the wire size...Ch. 10 - 1. A 2 AWG copper conductor is 450 ft long. What...Ch. 10 - 2. An 8 AWG conductor is 500 ft long and has a...Ch. 10 - 3. Three 500-kcmil copper conductors with Type RHH...Ch. 10 - 4. Eight 10 AWG aluminum conductors with Type THWN...Ch. 10 - 5. A three-phase motor is connected to 480 V and...Ch. 10 - 6. A 50-hp DC motor is connected to 250 volts. The...Ch. 10 - 7. A bank of electric heaters has a power rating...Ch. 10 - A 15-hp squirrel-cage induction motor is connected...Ch. 10 - Determine the resistance of a 16 AWG copper...Ch. 10 - Determine the ohms-per-mil-foot of an aluminum...
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