ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
8th Edition
ISBN: 9781119235385
Author: Thomas
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 1.32IP
Light Source Comparison A
Today people have three competing light sources for home use. This problem asks you to determine the trade-offs between the costs of the three types of lights. In this example, all three emit the same amount of light (lumens). The following table shows the salient properties of each lamp. Over the lifetime of one light-emitting diode (LED) lamp, how much cost savings is there by using the LED lamp over the traditional incandescent bulb and over the compact fluorescent lamp (CFL) if electricity costs 10¢/kWh?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Philips lighting has produced an LED light bulb that produces 800 lumens (the same amount as a traditional 60 W incandescent) but uses only 4 watts of power.
Calculate the efficiency of the LED light bulb. You can refer back to the Group Activity for guidance on this problem and the conversion factor between watts and lumens.
Consider a gravity-driven LED bulb that provides 16 lumens of lighting. The device uses a 10-kg sandbag that is raised by human power to a 2-m height. For continuous lighting, the bag needs to be raised every 20 minutes. Using an efficacy of 150 lumens per watt for the LED bulb, determine (a) the velocity of the sandbag as it descends and (b) the overall efficiency of the device.
Look at the images shown. Why can we measure resistance with a pencil drawn on a piece of paper? What is the component/material that is on the pencil that gives a high resistance? With the values given on the images, what are the corresponding color codes (indicate tolerance using a 4-band color code scheme)? If the first value is connected in series with the other value, what is the total resistance? If it’s parallel what is the total resistance?
0.449 mega ohms
102.2 kilo ohms
Chapter 1 Solutions
ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
Ch. 1 - Given an electrical quantity described in terms of...Ch. 1 - Express the following quantities to the nearest...Ch. 1 - An ampere-hour (Ah) meter measures the time...Ch. 1 - Electric power companies measure energy...Ch. 1 - Fill in the blanks in the following statements. To...Ch. 1 - Which of the two entries is larger? 1000...Ch. 1 - A wire carries a constant current of 30A. How many...Ch. 1 - The net positive charge flowing through a device...Ch. 1 - Figure P1-9 shows a plot of the net positive...Ch. 1 - The net negative charge flowing through a device...
Ch. 1 - A cell phone charger outputs 9.6 V and is...Ch. 1 - For 0t5s, the current through a device is...Ch. 1 - The charge flowing through a device is...Ch. 1 - The 12-V automobile battery in Figure P1-14 has an...Ch. 1 - The current through a device is zero for t0 and is...Ch. 1 - A string of holiday lights is protected by a 12A...Ch. 1 - When illuminated the relationship for a photocell...Ch. 1 - A new 6-V alkaline lantern battery delivers...Ch. 1 - The maximum current allowed by a device's power...Ch. 1 - Traffic lights are being converted from...Ch. 1 - Two electrical devices are connected as shown in...Ch. 1 - Figure P1-22 shows an electric circuit with a...Ch. 1 - Figure P1-22 shows an electric circuit with a...Ch. 1 - In Figure P1-24 the voltage v2 is 10 V and v4 is 5...Ch. 1 - For t0, the voltage across and power absorbed by a...Ch. 1 - Repeat Problem 1-22 using MATLAB to perform the...Ch. 1 - Using the passive sign convention, the voltage...Ch. 1 - Power Ratio (PR) in dB A stereo amplifier takes...Ch. 1 - AC to DC Converter A manufacturer's data sheet for...Ch. 1 - Charge-Storage Device A capacitor is a...Ch. 1 - Compute Data Sheet A manufacturer's data sheet for...Ch. 1 - Light Source Comparison A Today people have three...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
For the circuit shown, use the node-voltage method to find v1, v2, and i1.
How much power is delivered to the c...
Electric Circuits (10th Edition)
Consider the plot of the sinusoidal voltage v(t)=Vmcos(t+) shown in Figure 5.1 on page 216 and the following st...
Electrical Engineering: Principles & Applications (7th Edition)
Explain Faradays law and the function of Lenzs law.
Fundamentals of Applied Electromagnetics (7th Edition)
Find the no-load value of υo in the circuit shown.
Find υo when RL is 150 Ω.
How much power is dissipated in th...
Electric Circuits. (11th Edition)
Find Vo in the network in Fig. P5.8 using superposition.
Basic Engineering Circuit Analysis
Find the force of attraction in newtons between the charges Q1 and Q2 in Fig. 2.39 when r=1m r=3m r=10m Did the...
Introductory Circuit Analysis (13th Edition)
Knowledge Booster
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
- A 30-Wp SHS has a charging current of 1.7A at 1000 W/m2 irradiance. When the irradiance is decreased to 800W/m?, how much charging current is expected?arrow_forwardLightbulbs are rated by their power consumption in watts (W). Electricity is sold in units of energy, which is power multiplied by time. Electricity costs vary widely across the United States and are on the order of 0.08–0.30 $/kW-hr for residential customers. Create a spreadsheet that utilizes electricity costs and the number of hours per day that a lightbulb is on as input variables. Then calculate the annual cost to operate a 60-W, 75-W, and 100-W incandescent bulb and the equivalent LED bulbs consuming 8, 10, and 16 W, respectively. Assuming the average household operates six 60-W, four 75-W, and two 100-W incandescent bulbs for 6 hours a day, how much money can they save in a year by changing all the bulbs to equivalent LED bulbs?arrow_forwardAn aluminum wire replaces a copper wire with the same value of resistance. If the crosssectional area of the copper wire is 500 CM, find the cross sectional area of the aluminumwire in SM.arrow_forward
- Which of the following statements is correct regarding the efficacy and use of incandescent lamps compared to fluorescent, HID, and LED sources? select all that applies a. Incandescent lamps are generally considered superior to fluorescent, HID, and LED sources in terms of color rendering and color preference. b. Incandescent lamps are typically more energy-efficient than fluorescent, HID, and LED sources. c. Incandescent lamps require about five times as much electrical power as fluorescent, HID, or LED sources to produce the same level of illumination. d. Incandescent lamps are often chosen for applications where energy efficiency is the primary concern. e. Incandescent lamps are generally preferred for their high efficacy of 80 to 120 lumens per watt.arrow_forwardAbout 20% of a home’s use of energy goes to lighting, while the number for commercial establishments is closer to 40%. Fluorescent lights are about four times more efficient than incandescent lights—this is true for both the long tubes and the compact fluorescent lights (CFL). Thus, a 60-W incandescent bulb can be replaced by a 15-W CFL, which has the same brightness and color. The heat transfer from these CFLs is less, and they last up to 10 times longer. New white LED lights (which are clusters of small LED bulbs) are even more efficient (twice that of CFLs) and last 5 times longer than CFLs. However, their cost is still high. If the cost of electricity in your area is P10 per kWh, what is the total cost (capital plus operation) of using a 60-W incandescent bulb for 1000 hours (the lifetime of that bulb) if the bulb cost P100? If we replace this bulb with a compact fluorescent light that provides the same light output, but at 1/4 the wattage, and which costs P20 but lasts 10 times…arrow_forwardWhat is the size in square milimeter (mm2) is the cable of 250 MCM size? Calculate the temperature coefficient of resistance of aluminum at 300C and uses it to find the resistance of an aluminum wire at 700C if the wire has a resistance of 40 Ω at 300arrow_forward
- A specification sheet of a smart meter states that its rated current is 100 A and power dissipation is 3 W. It employs a current-sensing resistor of 200 μ. When the load current is at the rated value of the meter, calculate the power dissipation in all the other components of the meter.arrow_forwardShow all steps and solution. Electrical engineeringarrow_forwardThe resistance of a given device is 46ohms at 25degrees celcius. If the temperature coefficient of resistance of the material is 0.00454 at 20degrees celius, determine the temperature of the device when its resistance is 92ohms.arrow_forward
- Complete solution and 3 decimal places.arrow_forwardBriefly discuss the 10 electrical hazards in the laboratory and give the corresponding preventive and corrective measuresarrow_forward1.) An incandescent lamp, rated at 100 watts, gives a certain amount of light when placed across the 120V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120V dc power line? Discuss. 2.) Explain what is meant by effective current and effective voltage.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSON
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Programmable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill Education
Electric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSON
Engineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,
FMPR-103 pt1 l Power Systems Protection v1; Author: L&D for Protection and Control;https://www.youtube.com/watch?v=ELWncjsh5uE;License: Standard Youtube License