Choose the correct answer to the following questions:1- What is the total power radiated in Watts for the power density W =a) 4π²b) 8m²/32- Fresnel zone is also called assineW/m²?3r²c) 4π²/3d) 2π²/3a) Near Field b) Far Fieldc) Electrostatic Fieldd) Reactive Field3- The far-field distance at 900 MHz, if the maximum antenna dimension is 0.75 m is....a) 3.375 mb) 3.5mc) 3.375 cmd) none4- The antenna gain ison input power to antenna andon power due to ohmic losses.c) Independent, dependent d)a) Independent, independent b) Dependent, independentDependent, dependent5- If beam width of the antenna increases, then directivity.a) Decreases b) Increases c) Remains unchanged d) Depends on type of antenna

Step 1: Step 2: Step 3: Step 4:

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Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The figure below shows a radio-wave transmitter and a receiver separated by a distance d = 47.0 m and both a distance h = 27.0 m above the ground. The receiver can receive signals both directly from the transmitter and indirectly from signals that reflect from the ground. Assume the ground is level between the transmitter and receiver and a 180° phase shift occurs upon reflection. Determine the longest wavelengths that interfere in the following ways. O Transmitter Receiver (a) constructively (b) destructively
Q1) Very low signal strength in antenna. * Antenna patterns O Major lobes O Minor lobes O Null
This is a practice problem from the Engineering Electromagnetics course in my Electrical Engineering program. Could you please walk me through the steps of solving it so that I can solve more complicated ones in the future? Thank you for your assistance.
The directivity of an antenna is 12 dB. What will be the beam solid angle of the antenna? Express the answer in steradian.
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Q1. Choose the correct answer to the following questions: A-Which of the following type of antenna has a directivity of 0 dB? a) Horn antenna b) General antenna c) Patch antenna d) Isotropic antenna B-Amongst which of the following shows the relation between half power beam width and the directivity of an antenna? a) A larger HPBW equates to more directivity HPBW equates to less directivity A smaller HPBW equates to more directivity d) None of the above c) A smaller C-The region of 0.25 m from D=1.5m antenna at 300 MHz is. a) Far field b) near field c) Fresnel field d) none D- Which of the following lobes of an antenna radiation pattern is contained the most power? a Major lobe b) Minor lobe c) Side lobe d) Back lobe E- Suppose we have a copper conductor with a frequency of 60 Hz. We need to find the skin depth of the electromagnetic wave in this conductor. Conductivity of copper (a): 5.8 x 107 S/m. the skin depth is a) 9.5 mm b) 20 mm c) 10 cm d) none
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Multiple Choice Questions (MCQ): (15 M 1. For a horn antenna, in which flaring is done only in one direction is a) Conical antenna b) Sectoral antenna c) Pyramidal horn antenna d) Exponential horn antenna 2. Wave unaffected by night or day is a) Ground wave b) Skywave c) Space wave d) Tropospheric wave 3. When a wave is incident normally then the acceptable highest frequency at which signal can be returned is the a) critical frequency b) LUF c) optimum frequency d) dominating frequency 4. High frequency range is from? a. 0.3 to 3 MHz b. 3 to 30 MHz c. 30 to 300 MHz d. 3to 30 MHz 5. The actual permittivity of a medium whose relative permittivity is 5. a) 4.43*10-¹1F/m b) 4.43*10-¹2F/m c) 4.43*10¹¹F/m d) 4.43* 10¹2F/m
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