Multiple Choice directions: Circle the letter of the answers that best answer the question 25. A microwave antenna that is constructed from a waveguide. a. Phased array b. Horn c. Parabolic d. Helical 26. Which of the following is used as high-power microwave oscillator? a. Reflex klystron b. TWT c. Klystron d. Magnetron 27. A microwave tube that requires cooling system. a. Magnetron b. CFA c. TWT d. Klystron 28. If the electric field is perpendicular to the direction of propagation the field is called a. TM b. TE c. EMW d. TEM 29. In a klystron amplifier, velocity modulation is produced by: a. Buncher cavity b. Cathode c. Catcher cavity d. Collector 30. At what position is the input signal inserted into a traveling wave tube? a. At the collector end of the helix b. At the collector c. At the control grid d. At the cathode end of the helix 31. The main frequency determining element of a klystron is: a. Its mode of operation b. The accelerating voltage c. Its resonant cavity d. The repeller voltage 32. A high power microwave pulse of the order of megawatts can be generated by: a. Magnetron b. Reflex klystron c. TWT d. Klystron 33. An microwave antenna that has circular polarization. a. Parabolic b. Horn c. Helical d. Phased array 34. Amplifier with narrow bandwidth a. Klystron b. TWT c. Magnetron d. Reflex klystron 35. Reflex Klystron requires the following except: a. Positive resonator voltage b. Buncher cavity voltage c. Filament power d. Negative repeller voltage

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 15P: Review. A microwave oven is powered by a magnetron, an electronic device that generates...

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Multiple Choice directions: Circle the letter of the answers that best answer the question 25. A microwave antenna that is constructed from a waveguide. a. Phased array b. Horn c. Parabolic d. Helical 26. Which of the following is used as high-power microwave oscillator? a. Reflex klystron b. TWT c. Klystron d. Magnetron 27. A microwave tube that requires cooling system. a. Magnetron b. CFA c. TWT d. Klystron 28. If the electric field is perpendicular to the direction of propagation the field is called a. TM b. TE c. EMW d. TEM 29. In a klystron amplifier, velocity modulation is produced by: a. Buncher cavity b. Cathode c. Catcher cavity d. Collector 30. At what position is the input signal inserted into a traveling wave tube? a. At the collector end of the helix b. At the collector c. At the control grid d. At the cathode end of the helix 31. The main frequency determining element of a klystron is: a. Its mode of operation b. The accelerating voltage c. Its resonant cavity d. The repeller voltage 32. A high power microwave pulse of the order of megawatts can be generated by: a. Magnetron b. Reflex klystron c. TWT d. Klystron 33. An microwave antenna that has circular polarization. a. Parabolic b. Horn c. Helical d. Phased array 34. Amplifier with narrow bandwidth a. Klystron b. TWT c. Magnetron d. Reflex klystron 35. Reflex Klystron requires the following except: a. Positive resonator voltage b. Buncher cavity voltage c. Filament power d. Negative repeller voltage

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