Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Chapter 4, Problem 49R
Circle the correct answer defining the type of location:
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Good day, sir/ma'am. Here is the final question which I require assistance with. Thank you very much.
Question:
A power transmission line is made of copper 1 .80cm in Find the resistance of one mile of this line.
Q: 1 Choose the appropriate answer(s). (CLO1-1, PLO-2, CL-4)
a. Check all statements that apply (points can only be obtained if all boxes are checked
correctly)
Wind power ...
(a) .is uncertain (True) (False)
(b) ...is intermittent (True) (False)
(c) ..is random (True) (False)
(d)..can be forecasted (True) (False)
b. If everything else remains constant, when a significant load is added to the system the
generator rotating speed
(a) Slows down and as a result the torque needs to be increased to keep the frequency
(b) Speeds up and the resulting torque can be used to produce more energy
(c) Speeds up and the turbine must slow down the generator to prevent damage
c. The Hellmann formula describes .
(a) solar irradiance depending on the thickness of the cloud cover.
(b) the failure rate of power transmission lines depending on their length.
(c) wind speed depending on height above ground.
(d) the peak-to-average rate of load in a distribution feeder depending on average load.
d. An…
Chapter 4 Solutions
Electrical Wiring Residential
Ch. 4 - The largest size solid conductor generally...Ch. 4 - What is the minimum branch-circuit wire size that...Ch. 4 - What exceptions, if any, are there to the answer...Ch. 4 - What determines the ampacity of a wire?Ch. 4 - What unit of measurement is used for the diameter...Ch. 4 - What unit of measurement is used for the...Ch. 4 - What is the voltage rating of the conductors in...Ch. 4 - Indicate the allowable ampacity of the following...Ch. 4 - Prob. 9RCh. 4 - What are the colors of the conductors in...
Ch. 4 - For nonmetallic-sheathed cable, may the...Ch. 4 - Prob. 12RCh. 4 - Under what condition may nonmetallic-sheathed...Ch. 4 - a. What is the maximum distance permitted between...Ch. 4 - Prob. 15RCh. 4 - Prob. 16RCh. 4 - Prob. 17RCh. 4 - Prob. 18RCh. 4 - Prob. 19RCh. 4 - Circle the correct answer to the following...Ch. 4 - When running Type NM cable through a bored hole in...Ch. 4 - Where is the main service-entrance panel located...Ch. 4 - Is it permitted to use flexible metal conduit over...Ch. 4 - Liquidtight flexible metal conduit may serve as a...Ch. 4 - It is permissible for an electrician to connect...Ch. 4 - Terminals of switches and receptacles marked...Ch. 4 - Wire connectors marked AL/CU are suitable for use...Ch. 4 - A wire connector bearing no marking or reference...Ch. 4 - When Type NM cable is run through a floor, it must...Ch. 4 - When nonmetallic-sheathed cables are bunched or...Ch. 4 - In diagrams A and B, nonmetallic-sheathed cable is...Ch. 4 - The marking on the outer jacket of a...Ch. 4 - A 120-volt branch circuit supplies a resistive...Ch. 4 - In problem 35, it is desired to keep the voltage...Ch. 4 - Prob. 37RCh. 4 - The allowable ampacity of a 4 AWG THHN from Table...Ch. 4 - If, because of some obstruction in a wall space,...Ch. 4 - The recessed fluorescent luminaires installed in...Ch. 4 - Prob. 41RCh. 4 - What size overcurrent device protects the...Ch. 4 - May the 20-ampere small-appliance branch circuits...Ch. 4 - A 30-ampere branch circuit is installed for an...Ch. 4 - In many areas, metal framing members are being...Ch. 4 - Are set screwtype connectors permitted to be used...Ch. 4 - Most armored cable today has 90C conductors. What...Ch. 4 - If you saw two different types of SE cables, how...Ch. 4 - Circle the correct answer defining the type of...
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