Fundamentals of Applied Electromagnetics (7th Edition)
7th Edition
ISBN: 9780133356816
Author: Fawwaz T. Ulaby, Umberto Ravaioli
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 9.3, Problem 8CQ
What is the physical length of a half-wave dipole operating at (a) 1 MHz (in the AM broadcast band), (b) 100 MHz (FM broadcast band), and (c) 10 GHz (microwave band)?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Please draw logic circuit
A 220-volt, 20-horsepower compound motor (long shunt, Figure 21–16A) has an armature resistance of 0.25 ohm, series field resistance of 0.19 ohm, and shunt field resistance of 33 ohms.
a. Calculate the current taken by the motor at the instant of starting if it is con-nected directly to the 220-volt line.
b. Calculate the current when the motor is running if the armature is developing 184 volts counter-emf.
Design a modulo-11 ripple (asynchronous) up-counter with negative edge-triggered T flip-flops and draw the corresponding logic circuit.
(I)Build the state diagram and extract the state table
(II)Draw the logic circuit
(III)What is the maximum modulus of the counter?
Chapter 9 Solutions
Fundamentals of Applied Electromagnetics (7th Edition)
Ch. 9.1 - What does it mean to say that most antennas are...Ch. 9.1 - What is the radiated wave like in the far-field...Ch. 9.1 - In a Hertzian dipole, what is the underlying...Ch. 9.1 - Outline the basic steps used to relate the current...Ch. 9.1 - A 1 m long dipole is excited by a 5 MHz current...Ch. 9.2 - Prob. 5CQCh. 9.2 - What is the magnitude of the directivity of an...Ch. 9.2 - An antenna has a conical radiation pattern with a...Ch. 9.2 - Prob. 3ECh. 9.3 - What is the physical length of a half-wave dipole...
Ch. 9.3 - How does the radiation pattern of a half-wave...Ch. 9.3 - How does the radiation efficiency of a...Ch. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.5 - Prob. 6ECh. 9.5 - At 100 MHz, the pattern solid angle of an antenna...Ch. 9.6 - If the operating frequency of the communication...Ch. 9.6 - Prob. 9ECh. 9.6 - Prob. 10ECh. 9.8 - Verify that Eq. (9.86) is a solution of Eq. (9.85)...Ch. 9.8 - Prob. 12ECh. 9.8 - What condition must be satisfied in order to use...Ch. 9.8 - Derive an expression for the array factor of a...Ch. 9.8 - Prob. 15ECh. 9.11 - Prob. 11CQCh. 9.11 - Prob. 12CQCh. 9.11 - Prob. 13CQCh. 9.11 - Prob. 14CQCh. 9.11 - Prob. 15CQCh. 9 - A center-fed Hertzian dipole is excited by a...Ch. 9 - A 50 cm long center-fed dipole directed along the...Ch. 9 - Prob. 3PCh. 9 - Determine the following: (a) The direction of...Ch. 9 - Repeat Problem 9.4 for an antenna with...Ch. 9 - A 2 m long center-fed dipole antenna operates in...Ch. 9 - Repeat Problem 9.6 for a 20 cm long antenna...Ch. 9 - Prob. 9PCh. 9 - An antenna with a radiation efficiency of 90% has...Ch. 9 - Prob. 11PCh. 9 - The normalized radiation intensity of a certain...Ch. 9 - Repeat Problem 9.6 for a 1 m long half-wave dipole...Ch. 9 - Prob. 14PCh. 9 - A 50 cm long dipole is excited by a sinusoidally...Ch. 9 - Prob. 16PCh. 9 - For a dipole antenna of length l = 3/2, (a)...Ch. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Prob. 20PCh. 9 - A car antenna is a vertical monopole over a...Ch. 9 - Determine the effective area of a half-wave dipole...Ch. 9 - A 3 GHz line-of-sight microwave communication link...Ch. 9 - A half-wave dipole TV broadcast antenna transmits...Ch. 9 - A 150 MHz communication link consists of two...Ch. 9 - Consider the communication system shown in Fig....Ch. 9 - The configuration shown in Fig. P9.27 depicts two...Ch. 9 - Prob. 28PCh. 9 - The configuration shown in Fig. P9.29 depicts a...Ch. 9 - Prob. 30PCh. 9 - Prob. 31PCh. 9 - A uniformly illuminated rectangular aperture...Ch. 9 - An antenna with a circular aperture has a circular...Ch. 9 - Prob. 34PCh. 9 - Prob. 35PCh. 9 - Prob. 36PCh. 9 - Prob. 37PCh. 9 - Prob. 38PCh. 9 - Prob. 39PCh. 9 - Prob. 40PCh. 9 - Find and plot the normalized array factor and...Ch. 9 - Prob. 44PCh. 9 - A three-element linear array of isotropic sources...Ch. 9 - An eight-element linear array with /2 spacing is...Ch. 9 - A linear array arranged along the z axis consists...
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
- the diagram show 4 motor connected to a k-35 controller. I would like detail explanation to know how the circuit work. Is the controller compatible with the motor? The motor shown is series, parallel or both?arrow_forwardplease draw logic diagram pleasearrow_forwardPlease draw the diagrams please thank youarrow_forward
- A plane wave propagating through a medium with &,,-8 μr = 2 has: E = 0.5 e-j0.33z sin (108 t - ẞz) ax V/m. Determine (a) ẞ (b) The loss tangent (c) Wave impedance (d) Wave velocity (e) H fieldarrow_forward2) The phase voltage at the terminals of a balanced three-phase Y-connected load is 2400 V. The load has an impedance of 16+j12 2/6 and is fed from a line having an impedance of 0.10+j0.80 2/6. The Y- connected source at the sending end of the line has a positive phase sequence and an internal impedance of 0.02+j0.16 2/6. Use the a-phase voltage at the load as the reference. a) Construct the a-phase equivalent circuit of the system b) Calculate the line currents IaA, IbB, and Icc c) Calculate the phase voltages at the terminals of the source, Van, Vbn, Vcn- d) Calculate the line voltages at the source, Vab, Vbc and Vca. e) Calculate the internal phase-to-neutral voltages at the source, Va'n, Vb'n, Ve'n,arrow_forward1) • A balanced three-phase circuit has the following characteristics: Y-Y connected The line voltage at the source is Vab = 120√3(0°V • The phase sequence is positive The line impedance is 2+ j3 2/0 The load impedance is 28 + j37 02/0 a) [4 pts] Draw the single phase equivalent circuit for the a-phase. b) [2 pts] Calculate the line current IaA in the a-phase. c) [4 pts] Calculate the line voltage VAB at the load in the a-phase.arrow_forward
- Find the value of V0 using the superposition method. Note: The answer is V0=-428.57mvarrow_forwardDon't use ai to answer I will report you answerarrow_forwardIf a trolley has a 120VDC power supply intended to power auxiliary components such as lights, buzzers, and speakers, how would the speakers connect to that power system? I understand that speakers typically operate on AC, so what is the most efficient way to connect them to the 120VDC setup? Additionally, could you provide an estimate of the power output for the speakers?arrow_forward
- Choose the appropriate answer 1) Maximum dimension of antenna is 0.5m and operating frequency is 9 GHz, thus the radius of reactive near field region is 0.562m 1.265m 2.526m 3.265m 2) If distance between transmitter and receiver is 2km and the signal carrier frequency is 300kHz Rapidly time-varying fields DC field Quasi-static field None 3) The polarization mismatch factor for horizontal polarization wave incident on +z axis is is if the antenna polarization is circular 0.5 зав 0.707 1 4) Ez 0 and Hz #0 (HE modes): This is the case when neither E nor H field is transverse to the direction of wave propagation. They are sometimes referred to as TEM hybrid modes TM TE 5) The normalized radiation intensity of an antenna is represented by: U(6)=cos²(0) cos2 (30), w/s Half-power beamwidth HPBW is...... 28.75 10 0 14.3arrow_forwardChoose the best answer of the following: 1- quasi-static electromagnetic field is the a) low frequency b)high frequency c) time independent d) none of the above 2- Displacement current is taken to be negligible (compared to the conduction current) if a) σ>>wε b)σ << wɛ c) σ =0 d) (a and c) 3- The transmission line act as inductor when it terminated by: a) Open circuit load b) short circuit load c)matched load d)none of the above 4- The scattering aperture equals to the effective aperture when the antenna is: a) Complex conjugate matching b) short circuit c) open circuit d) none of the above 5- The isotropic point source has directivity of: a) Infinity b)1 c) 0 d)1.5arrow_forwardI selected a DC-DC converter capable of delivering 120 VDC from a 600 VDC input. When I reached out to the manufacturer, they asked for the total power consumption the converter would need to handle.To estimate this, I calculated the power requirements for the components that will use the 120 VDC supply: interior lighting, end lights, and buzzers. The breakdown is as follows:- Light Bulbs: 16 bulbs at 10 W each = 160 W- Buzzers: 2 buzzers at 5 W each = 10 W- End Lights: 2 lights at 15 W each = 30 W This results in a total estimated power demand of 200 W.My concern is whether I should request a higher wattage rating for the converter to provide sufficient tolerance and ensure the system operates efficiently without risking an overload. Note: The DC power system is designed specifically for a trolleyarrow_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,
How does an Antenna work? | ICT #4; Author: Lesics;https://www.youtube.com/watch?v=ZaXm6wau-jc;License: Standard Youtube License