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Parabolic Reflector Antenna Question & Answers

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This article lists 50 Parabolic Reflector Antenna MCQs for engineering students. All the Parabolic Reflector Antenna Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of a Parabolic Reflector Antenna.

German Physicist named Heinrich Hertz discovered Parabolic reflectors during the invention of Radio waves. Typical Parabolic reflector antennas contain metal-made parabolic reflectors along with small feeding antenna and reflectors facing each other.

Most common parabolic reflectors are in the shape of a dish popularly referred to as a parabolic Dish or Dish Antenna. Directivity is high and is considered to be the major advantage of this type of antenna. Functionality resembles a Flashlight Reflector.

Parabolic reflectors used must be larger compared to the wavelengths of Radio waves used. The radio spectrum's higher frequencies section makes use of these antennas. In Point-to-point communication, these antennas are utilized as High-gain antennas.

Microwave Relay links to carry television and telephone signals among near cities, WAN/LAN For data communication links, Spacecraft and Satellite communication antennas, and Radio telescopes use these Parabolic Reflectors.

1). What are the various Reflector antennas?

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2). What type of antenna is a Parabolic Reflector?

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3). What is the range of frequency of Parabolic Reflector Antennas?

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4). Line joining vertex and the focus in a Parabolic Reflector is referred to as _____________?

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5). Focal Length to the size of aperture ratio in a Parabolic Reflector is referred to as __________?

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6). What are the major parts of a Parabolic Reflector Antenna?

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7). What can be the actual section of radiating in the Parabolic Reflector Antenna?

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8). Reflecting surface of a Parabola in a Parabolic Reflector Antenna is ___________?

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9). Incoming signals concentrated at a point in a Parabolic Reflector Antenna is ___________?

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10). What is the point present at the center of a Parabolic Reflector Antenna?

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11). Distance from the focus to the vertex of a Parabolic Reflector Antenna is ___________?

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12). What is the formula to calculate the Focal Length?

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13). What makes wave-fronts in phase in a Parabolic Reflector Antenna?

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14). What is the opening of a Parabolic Reflector Antenna?

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15). What are the various factors affecting Parabolic Reflector Antennas Gain?

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16). What happens to gain if the reflecting surface diameter of a Parabolic Reflector Antenna is large?

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17). Gain of a Parabolic Reflector Antenna depends upon _________ when wavelengths are considered?

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18). If the Reflector is utilized on the two distinct frequencies gain obtained is __________?

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19). How the gain of a Parabolic Reflector Antenna is calculated?

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20). What is the formula to calculate Parabolic Reflector Antenna Gain?

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21). What happens to beam width if the Parabolic Reflector Antenna Gain increases?

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22). How to calculate the beamwidth of a Parabolic Reflector Antenna?

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23). Narrow beamwidths compared to various antenna types are provided by ____________?

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24). Narrow beamwidth in a Parabolic Reflector Antenna must have a large _________ of used Radio waves?

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25). Radiating element in a Parabolic Reflector Antenna at focus is __________?

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Parabolic Reflector Antenna MCQs for Exams

26). What are the various feeding systems of a Parabolic Reflector Antenna?

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27). Radiating element placed at a Focal point in a Parabolic Reflector Antenna of _________?

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28). Feed and the support used to block some part of the beam in ____________ of a Parabolic Reflector antenna?

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29). Which of the feed doesn’t require secondary surfaces of reflection in a Parabolic Reflector antenna?

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30). What is the efficiency of using a Cassegrain feeding in a Parabolic Reflector antenna?

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31). Overall length of Dish antenna among two Reflectors is ________ than length amid Parabolic reflector and radiating element?

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32). Secondary reflector used is Concave in shape in ____________ feed of a Parabolic Reflector antenna?

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33). Better illumination and efficiency up to 70 % is provided in __________?

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34). Parabola of asymmetrical shape segment type reflector is utilized in __________?

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35). What type of feeding mechanism is utilized in Home Satellite antennas of Television?

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36). What is used in a Parabolic Reflector Antenna that improves performance?

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37). What affects the efficiency of aperture in Parabolic antennas?

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38). Aperture of reflector is large than wavelengths in _________?

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39). What type of antennas are mostly preferred in TV Dishes?

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40). Size of a Parabolic Reflector Antenna is quite _______?

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Parabolic Reflector Antenna MCQs for Students

41). Beam adjustments are easier by using __________?

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42). What are the advantages of a Parabolic Reflector Antenna?

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43). Parabolic Reflector used in an antenna reduces ___________?

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44). What are the various applications of a Parabolic Reflector Antenna?

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45). To locate the guided missile, airplane and ships ____________ are used?

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46). What directs the Radio waves to the receivers' point of focus in it?

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47). Gain in a Parabolic Reflector Antenna is ______________?

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48). Which of these antennas is highly efficient directional antenna?

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49). Which antenna can collimate radiations of an Isotropic source confined into a Parallel beam?

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50). Which antenna is used in collecting energies from distant sources?

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