Related InterviewSolutions

• Which of the following statements is false for flat reflector?(a) Plane reflector is used to reduce the backward radiation(b) Increases the gain in forward direction(c) A large flat sheet placed in front of dipole increases the directivity(d) Decreases the gain in forward directionI got this question in an online interview.This is a very interesting question from Flat Sheet Reflector topic in chapter Reflector Antenna of Antennas
• Which of the following is a dual reflector antenna?(a) Cassegrain antenna(b) Parabolic antenna(c) Offset reflector antenna(d) Wire antennaI got this question in final exam.This intriguing question comes from Basics topic in portion Reflector Antenna of Antennas
• In order to achieve good system efficiency in a corner reflector, the spacing between the vertex and the feed must be ______ as included angle decreases.(a) Increased(b) Decreased(c) Constant(d) Either increases or decreasesI had been asked this question in final exam.Origin of the question is Corner Reflector in portion Reflector Antenna of Antennas
• Which of the following antenna has a shape of letter ‘C’?(a) Orange peel antenna(b) Pill box(c) Yagi-Uda antenna(d) Wire dipoleThe question was asked by my school teacher while I was bunking the class.This intriguing question originated from Application of Parabolic Reflector topic in chapter Reflector Antenna of Antennas
• Which of the following regarding the Cassegrain feed system is false?(a) Spill over is reduced(b) It is a dual reflector antenna(c) Minor lobe radiation increases(d) A convex sub-reflector is usedThe question was posed to me in an internship interview.The query is from Feeding Systems topic in chapter Reflector Antenna of Antennas
• Which of the following coincides with the focus of the parabolic reflector in a Cassegrain antenna?(a) Feed(b) Parabolic reflector(c) Focus of hyperboloid reflector(d) Focus of primary radiatorThe question was posed to me in semester exam.I'd like to ask this question from Feeding Systems in chapter Reflector Antenna of Antennas
• Find the aperture ratio of the paraboloid with aperture diameter 1m at 1.5GHz frequency?(a) 5(b) 0.2(c) 1.5(d) 7.5The question was asked by my school teacher while I was bunking the class.Question is taken from Parabolic Reflector Antenna in chapter Reflector Antenna of Antennas
• The number of images, polarity and position in the analysis of the radiation field of corner reflector depends on what?(a) Only included angle(b) Polarization of feed element(c) Both included angle & Polarization of feed element(d) Neither included angle nor Polarization of feed elementThis question was posed to me by my school principal while I was bunking the class.Query is from Corner Reflector in section Reflector Antenna of Antennas
• Corner angle of a corner reflector with 4 current elements is ______(a) \(\frac{π}{4}\)(b) \(\frac{π}{2}\)(c) \(\frac{π}{8}\)(d) 4πThe question was posed to me in an online quiz.This intriguing question comes from Corner Reflector topic in chapter Reflector Antenna of Antennas
• Corner angle of a square corner reflector antenna is _____(a) 90°(b) 180°(c) 60°(d) 45°This question was posed to me in final exam.This key question is from Corner Reflector topic in division Reflector Antenna of Antennas