Time Left - 06:00 mins

ESE 2021 Technical Quiz 78 ||Antennas

Attempt now to get your rank among 82 students!

Question 1

Which one of the following antenna structures is best for generating a circularly polarized radiation?

Question 2

In a uniform linear array, four isotropic radiating elements are spaced Description: Description: Description: Description: Description: E:\GradeStack Courses\ISRO-EC-2012_files\image114.png/4 apart. The progressive phase shift between the elements required for forming the main beam at 60 ° of the end fire is:

Question 3

In broad side array 9 isotropic radiators are equally spaced at a distance of  The beam width between first nulls will be approximately

Question 4

Which of the following antenna is used as a standard reference for calculating directive gain?

Question 5

An antenna has the directivity of 4. If it operates at 30 GHz frequency, the maximum value of effective aperture of this antenna will be
  • 82 attempts
  • 1 upvote
  • 1 comment
Jun 7ESE & GATE EC