1 cm – 10 cm c. 10 cm – 1 m d. 0.1 cm – 1 cm. C. A & D 27.77 ohm If the individual antennas of the array are spaced equally along a straight line. D. None of the above D. None of the above Ans: β x (λ/2) A. C. 33.33 ohm Which among the following elucidate the generation of electromagnetic waves? 98. C. 8 Which among the following is an application of high frequency? 86. C. Triangular A. B. 0.0149 m2 According to the directivity of a small loop, which value of ‘θ’ contributes to achieve the maximum value of radiation intensity (Umax)? 27% C. β + (λ/2) Real fields Helical antenna was invented by----- 18. Antenna Characteristics ! D. None of the above A. e-jkr In retarded potentials, what factor of time delay is generally introduced in A & V equations? In flared transmission line, the radiation phenomenon increases due to ________ in flaring Give it a try and share your score. C. Circular 2 C. Across current of about 300A across the radiation resistance 2 Ω. From the radiation point of view, small loops are _________radiators Antenna Objective Type Questions With Answers PDF Download. Antenna Wave And Propagation Mcq Findscotland Co Uk. 92. C. 180° 22.22 ohm This is the Multiple Choice Questions in Chapter 15: Radio-Wave Propagation from the book Electronic Communication Systems by Roy Blake. Thus, an antenna is a device used for radiating or receiver radio waves. 81. D. None of the above TEXT BOOK(S) [TB] 1. A. A. C. Both a and b R A V E E N D R A M . B. Lorentz Ans: Spherical The path difference in horn antennas must be----- 19. Page 5 MULTIPLE CHOICE QUESTIONS UNIT-3: ANTENNA ARRAYS 1. Plane C. Interference of normal radiation & radio wave propagation Electromagnetic Wave Propagation Quiz 1 ProProfs Quiz. Which type of ground wave travels over the earth surface by acquiring direct path through air from transmitting to receiving antennas? ELECTRONICS IMPORTANT MCQ PDF Antenna Amp Wave Propagation 3. Ebook Download Antenna and Wave Propagation, by Dr. Sisir K Das, Dr. Annapurna Das. File:14092 - ELECTRONICS TECHNICIAN, VOLUME 07--ANTENNAS AND WAVE PROPAGATION.pdf (file redirect) ; File:Electronics Technician - Volume 7 - Antennas and Wave Propagation - NAVEDTRA 14092.pdf Under which conditions of charge does the radiation occur through wire antenna? D. By double side band system A dipole carries r.m.s. (λ/50 ) < l ≤ (λ /10) C. Reflective region C. Both a and b Power density is basically termed as ________ power per unit area Electronics and Communication Engineering ECE FAQ Antennas and Wave Propagation Unit wise Two Marks, Short, Viva, Interviews Questions and Answers PDF D. 0.99 m2 2. C. A & C What is the direction of varying orientation of polarized surface wave at the earth surface in a wave tilt mechanism? Ans: Series Increase in radiation resistance b) Non-Linear. Harikesh Yadav June 1, 2017 ECE MCQ PDF, General. Wireless Communication Systems Multiplexer Modulator Converter Electromagnetic Energy Converter De modulator De Electromagnetic multiplexer Energy Our focus . D. None of the above 90. B. Conductivity Solid bodies 90° B. B. Loop A. C. α = ±βd 42. When an electromagnetic wave travels from transmitter to receiver, which factor/s affect/s the propagation level? A. Maxwell’s A. Spherical Decrease According to Snell’s law in optics, if a ray travels from dense media to rarer media, what would be its direction w.r.t the normal? D. Inverter 5. C. Current density Which layer has the atmospheric conditions exactly opposite to that of standard atmosphere? For a charge with no motion D. All of the above Antennas and Wave Propagation is written for the first course on the same. A. B. Axial C. 18 MHz Field pattern estimation due to any length of antenna B. Capacitive According to Webster’s dictionary, what is an antenna? ANTENNA AND WAVE PROPAGATION MULTIPLE CHOICE QUESTIONS Pdf. If the length of elements of an array is greater than λ/2, which will be the operating region of an array? Sterdian is a measurement unit of __________ Ans: Current Ans: Resistive A. B. Mcqs in Wave propagation. C. 8.55 dB A. Ans: Solid angle The following list shows the first 100 pages that use this file only. C. 10 cm – 1 m A. Antenna and wave Propagation, AWP Questions For placement and exam preparations, MCQs, Mock tests, Engineering Class handwritten notes, exam notes, previous year questions, PDF free download Directional antenna, what is /are the advantages of using ferrite loops arrays. Which method of excitation is/are applicable for it aircraft or missile dB:! Charged particles ranging in altitude from 30- 250 miles above the surface of the above:. In radiation resistance C. Decrease in radiation resistance functioning role of an ordinary endfire?! 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