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Choose the best answer 1. The minimum value of the directivity of an antenna is.......... a) Unity b) Zero 2. Very low signal strength in antenna. a) Minor lobes b) Null c) Infinite d) None c) Antenna patterns d) Major lobes 3. the maximum directivity of an antenna that normalized far field pattern is given by? 0≤0≤ and 0 ≤≤π/2,3л/2≤ p ≤ 2π E(0, 4) = {(sin 0 ((sin cos² ) 1/2 0 is a) 7.07dB b) 7.7dB elsewhere c) 8.7dB d) 9dB 4. the depth of penetration of 1 MHz wave in sea water which has conductivity mhos/meter and permeability approximately equal to that of free space is a) 25mm b) 25cm c)25m 5. The free space media can be considered as _ a) Lossy media b) lossless media c) good conductor 6. The input impedance is equal to the load impedance when a) l = 2 b)1=22 c)=4 d) 25km d) a and c .... d) a and b

Choose the best answer 1. The minimum value of the directivity of an antenna is.......... a) Unity b) Zero 2. Very low signal strength in antenna. a) Minor lobes b) Null c) Infinite d) None c) Antenna patterns d) Major lobes 3. the maximum directivity of an antenna that normalized far field pattern is given by? 0≤0≤ and 0 ≤≤π/2,3л/2≤ p ≤ 2π E(0, 4) = {(sin 0 ((sin cos² ) 1/2 0 is a) 7.07dB b) 7.7dB elsewhere c) 8.7dB d) 9dB 4. the depth of penetration of 1 MHz wave in sea water which has conductivity mhos/meter and permeability approximately equal to that of free space is a) 25mm b) 25cm c)25m 5. The free space media can be considered as _ a) Lossy media b) lossless media c) good conductor 6. The input impedance is equal to the load impedance when a) l = 2 b)1=22 c)=4 d) 25km d) a and c .... d) a and b

Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter14: Basic Trigonometry And Vectors
Section: Chapter Questions
Problem 1RQ: 1. Which trigonometric function is used to find the angle if the length of the hypotenuse and of the...
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Choose the best answer 1. The minimum value of the directivity of an antenna is.......... a) Unity b) Zero 2. Very low signal strength in antenna. a) Minor lobes b) Null c) Infinite d) None c) Antenna patterns d) Major lobes 3. the maximum directivity of an antenna that normalized far field pattern is given by? 0≤0≤ and 0 ≤≤π/2,3л/2≤ p ≤ 2π E(0, 4) = {(sin 0 ((sin cos² ) 1/2 0 is a) 7.07dB b) 7.7dB elsewhere c) 8.7dB d) 9dB 4. the depth of penetration of 1 MHz wave in sea water which has conductivity mhos/meter and permeability approximately equal to that of free space is a) 25mm b) 25cm c)25m 5. The free space media can be considered as _ a) Lossy media b) lossless media c) good conductor 6. The input impedance is equal to the load impedance when a) l = 2 b)1=22 c)=4 d) 25km d) a and c .... d) a and b
Transcribed Image Text:Choose the best answer 1. The minimum value of the directivity of an antenna is.......... a) Unity b) Zero 2. Very low signal strength in antenna. a) Minor lobes b) Null c) Infinite d) None c) Antenna patterns d) Major lobes 3. the maximum directivity of an antenna that normalized far field pattern is given by? 0≤0≤ and 0 ≤≤π/2,3л/2≤ p ≤ 2π E(0, 4) = {(sin 0 ((sin cos² ) 1/2 0 is a) 7.07dB b) 7.7dB elsewhere c) 8.7dB d) 9dB 4. the depth of penetration of 1 MHz wave in sea water which has conductivity mhos/meter and permeability approximately equal to that of free space is a) 25mm b) 25cm c)25m 5. The free space media can be considered as _ a) Lossy media b) lossless media c) good conductor 6. The input impedance is equal to the load impedance when a) l = 2 b)1=22 c)=4 d) 25km d) a and c .... d) a and b
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