Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 10, Problem 12RQ
It is decided to use parallel 0000 conductors to supply the load in Question 11. How many 0000 conductors will be needed?
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"Detail the solution to the question with an
explanation of the integration."
A diploe with a total loss resistance of 122, is connected to generator whose internal impedance is
50+j25, the peak voltage of generator is 2 V and the impedance of the dipole excluding the loss
resistance is 73+j42.5. All antenna and generator are connected via 50-92 2/4 long lossless transmission
line.
(a) Draw the equivalent circuit
(b) Determine the power supplied by the generator
(c) Determine the power radiated by the antenna
For an X-band (8.2-12.4) GHz rectangular horn antenna with aperture dimensions of
5.5cm and 7.4cm. find its maximum effective aperture (in cm2) when its gain (over
isotropic) is
1- 14.8dB at 8.2 GHz
2-16.5dB at 10.3GHz
3- 18dB at 12.4GHz
Find the directivity in dB and the effective aperture for the following normalized radiation
intensity (take f=100 MHz):
U(0,0)=0.342csc0
0≤0≤20
20 ≤0≤60
60 ≤0≤18
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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- An antenna with a radiation impedance of 75+j10 ohm, with 10 ohm loss resistance, is connected to a generator with open-circuit voltage of 12 v and an internal impedance of 20 ohms via a 2/4-long transmission line with characteristic impedance of 75 ohms. (a) Draw the equivalent circuit (b) Determine the power supplied by the generator. (c) Determine the power radiated by the antenna. (d) Determine the reflection coefficient at the antenna terminals.arrow_forwardcircuit analysis using superposition what is value of iarrow_forwardTwo X-band 8.2-12.4 GHz rectangular horns, with aperture dimensions of 5.5 cm and 7.4 cm and each with a directivity of 16.3 dB (over isotropic at 10 GHz), are used as transmitting and receiving antennas. Assuming that the input power is 200 mW, the VSWR of each is 1.1. The conduction-dielectric efficiency is 100%, and the antennas are polarization-matched, find the maximum received power when the horns are separated in air by 5 m.arrow_forward
- The normalized radiation intensity of an antenna is rotationally symmetric in 4, and it is represented by 1 0°≤8 <30° 0.5 30° ≤ 0 < 60° U = 0.1 60° ≤ 0 < 90° 90° ≤ 0 ≤ 180° a) Determine the directivity (above isotropic) of an antenna in dB? b) Determine the directivity (above an infinitesimal dipole) of an antenna in dB?arrow_forwardA resonant lossless 2/2 dipole antenna, having a directivity of 2.156 dB at frequency of 9 MHz, has input impedance 73 £2 and is connected to a lossless 73 2 transmission line. A wave, having the same polarization as the antenna, is incident upon the antenna with a power density of 5 W/m². Find the received power available at the end of the transmission line.arrow_forward"Detail the solution to the question with an explanation of the integration." The normalized radiation intensity is given by: 1 0≤0≤30 U(0,) cos(0) 30 ≤0≤90 0.866 0 90 ≤0≤180 Determine the maximum directivity, HPBWarrow_forward
- Don't use ai to answer I will report you answer.arrow_forward"Detail the solution to the question with an explanation of the integration." A diploe with a total loss resistance of 12, is connected to generator whose internal impedance is 50+j25, the peak voltage of generator is 2 V and the impedance of the dipole excluding the loss resistance is 73+j42.5. All antenna and generator are connected via 50-92 2/4 long lossless transmission line. (a) Draw the equivalent circuit (b) Determine the power supplied by the generator (c) Determine the power radiated by the antennaarrow_forwardcircuit analysis find ia using mesh analysisarrow_forward
- cicuit analysisfind the power transfered to circuit by 4A currentarrow_forward"Detail the solution to the question with an explanation of the integration." The normalized far-zone power pattern of an antenna is given by for 0≤0≤ and 0≤≤/2,3/2≤≤2, U(0,0)=sine (cos0)2 elsewhere Find the directivity using the exact expression, HPBW in both azimuth and elevationarrow_forwardcircuit analysis using source transform find v?how much power does a 120v source deliver to the circuit?arrow_forward
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