EBK INTRODUCTORY CIRCUIT ANALYSIS
13th Edition
ISBN: 8220100668234
Author: Boylestad
Publisher: PEARSON
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Chapter 3, Problem 9P
- A contractor is concerned about the length of copper hookup wire still on the reel of Fig.3.44. He measured the resistance and found it to be
- A tape measure indicated that the thickness of the stranded wire was about 1/32 in. What is the approximate length in feet?
- What is the weight of the wire on the reel?
- It is typical to see temperature ranges for materials listed in centigrade rather than Fahrenheit degrees. What is the range in Fahrenheit degrees? What is unique about the relationship between degrees Fahrenheit and degrees centigrade at
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A copper conductor wire with a total length of 100ft is used in a 15 amp common household circuit has a resistance of 1.62 ohms/1000ft. If the circuit is fully loaded, determine the heat produced by the conductor? (Hint 1W = 3.413Btu/hr)
a. 124.40 Btu/hr
b. 99.83 Btu/hr
c. 8.29 Btu/hr
d. 177.50 Btu/hr
#3. write your solution pls
A meeting hall in an organization is to be provided with a lighting installation. The hall is 30 m × 20 m × 8 m (high). The mounting height is 5 m and the required level of illumination is 144 lm/m2. Design a lighting system for the hall with the given data.
Lumens/watt for 200-W lamp = 12 and
Lumens/ watt for 500-W lamp = 16.
Utilization coefficient = 0.6
Maintenance factor = 0.75
space/height ratio=1
Using metal filament lamps, estimate the following:
Draw the spacing layout of these lamps
State the reason if any of these 2 lamps cannot be arranged in the hall with the given specification.
What is the significance of ‘room surface maintenance factor’ and ‘utilization factor’ in the lighting design
Chapter 3 Solutions
EBK INTRODUCTORY CIRCUIT ANALYSIS
Ch. 3 - Convert the following to mils: 0.2Â in. 1/32Â in....Ch. 3 - Calculate the area in circular mils (CM) of wires...Ch. 3 - Prob. 3PCh. 3 - What is the resistance of a copper wire 200 ft...Ch. 3 - What is the area in circular mils of an aluminum...Ch. 3 - A 2.2 resistor is to be made of nichrome wire. If...Ch. 3 - What is the diameter in inches of a copper wire...Ch. 3 - A wire 1000 ft long has a resistance of 0.5 and an...Ch. 3 - A contractor is concerned about the length of...Ch. 3 - What is the cross-sectional area in circular mile...
Ch. 3 - Prob. 11PCh. 3 - Determine the increase in resistance of a copper...Ch. 3 - What is the new resistance level of a copper wire...Ch. 3 - In construction the two most common wires employed...Ch. 3 - Compare the area of a #12 wire with the area of a...Ch. 3 - Compare the area of a #20 hookup wire to a #10...Ch. 3 - For the system in Fig. 3.46, the resistance of...Ch. 3 - From Table 3.2, determine the maximum permissible...Ch. 3 - The resistance of a copper wire is 2 at room...Ch. 3 - The resistance of an aluminum bus-bar is 0.02 at...Ch. 3 - The resistance of a copper wire is 1.2 at room...Ch. 3 - The resistance of a copper wire is 25m at a...Ch. 3 - The resistance of a copper wire is 1 at 20C (room...Ch. 3 - If the resistance of 1000 ft of wire is about 1 at...Ch. 3 - Verify the value of 20 for copper in Table 3.4 by...Ch. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - A 22 wire-wound resistor is rated at +200PPM for a...Ch. 3 - A 100 wire-wound resistor is rated at +100PPM for...Ch. 3 - What is the approximate increase in size from a 1...Ch. 3 - If the resistance between the outside terminals of...Ch. 3 - If the wiper arm of a linear potentiometer is...Ch. 3 - Show the connections required to establish 4k...Ch. 3 - Find the range in which a resistor having the...Ch. 3 - Find the color code for the following 10%...Ch. 3 - Is there an overlap in coverage between 20...Ch. 3 - Given a resistor coded yellow, violet, brown,...Ch. 3 - How would Fig. 3.26(a) change if the resistors of...Ch. 3 - Find the value of the following surface mount...Ch. 3 - Find the conductance of each of the following...Ch. 3 - Find the conductance of 1000 ft of #12 AWG wire...Ch. 3 - Find the conductance of a 10,20 and 100 resistor...Ch. 3 - The conductance of a wire is 100 S. If the area of...Ch. 3 - Why do you never apply an ohmmeter to a live...Ch. 3 - How would you check the status of a fuse with an...Ch. 3 - How would you determine the on and off states of a...Ch. 3 - How would you use an ohmmeter to check the status...Ch. 3 - Using metric units, determine the length of a...Ch. 3 - Repeat Problem 11 using metric units; that is,...Ch. 3 - If the sheet resistance of a tin oxide sample is...Ch. 3 - Determine the width of a carbon resistor having a...Ch. 3 - Derive the conversion factor between (CM-/ft) and...Ch. 3 - In your own words, review what you have learned...Ch. 3 - Visit your local library and find a table listing...Ch. 3 - Find at least one article on the application of...Ch. 3 - Using the required 1MA/cm2 density level for...Ch. 3 - Research the SQUID magnetic field detector and...Ch. 3 - Find the resistance of the thermistor having the...Ch. 3 - Using the characteristics of Fig. 3.38, determine...Ch. 3 - Referring to Fig. 3.40(a), find the terminal...
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