Chapter 9 Antennas MCQs

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1. . What is the functioning role of an antenna in receiving mode?





2. . In what range of frequencies are most omnidirectional horizontally polarized antennas used?





3. . A device that converts high frequency current into electromagnetic wave.





4. . Hertzian Dipole carries which type of current throughout its length while radiating?





5. . A Hertzian dipole consists of two ________ and ________ charges separated by a very short distance.





6. . A half wave dipole is sometimes called





7. . What is the radiation characteristic of a dipole antenna?





8. . An antenna which is one-fourth wavelength long is:





9. . The ability of an antenna to radiate more energy in one direction than in other direction is called





10. . -------- of an antenna is a measure of how the antenna concentrates its radiated power in a given direction.





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