Radiation Pattern of 8-Isotropic Elements Online Exam Quiz
Radiation Pattern of 8-Isotropic Elements GK Quiz. Question and Answers related to Radiation Pattern of 8-Isotropic Elements. MCQ (Multiple Choice Questions with answers about Radiation Pattern of 8-Isotropic Elements
An 8-isotropic element end-fire array separated by a ?/4 distance has first null occurring at __
Options
A : 60
B : 30
C : 90
D : 150
The direction of first null of the broadside array of N-Isotropic sources is ___
Options
A : cos^{-1}([?\frac{?}{Nd}])
B : cos^{-1}?([?\frac{??}{Nd}])
C : cos^{-1}?([?\frac{2??}{Nd}])
D : cos^{-1}?([?\frac{?}{2Nd}])
The direction of nulls for broadside array of N ?Isotropic sources is given by ___
Options
A : cos^{-1}?([?\frac{n?}{Nd}])
B : cos^{-1}?([?\frac{2n?}{Nd}])
C : cos^{-1}?([?\frac{2?n?}{2Nd}])
D : cos^{-1}?([?\frac{n?}{Nd}])
The direction of nulls for end-fire array of N ?Isotropic sources separated by ?/4 is given by __
Options
A : ?_n=cos^{-1}?([?1?\frac{4n}{N}])
B : ?_n=sin^{-1}?([?1?\frac{4n}{N}])
C : ?_n=cos^{-1}?([?1?\frac{2n}{N}])
D : ?_n=cos^{-1}?([?1?\frac{n}{N}])
The direction of the first minor lobe of 8 element isotropic broadside array separated by ?/2 is ___
Options
A : 41.4?
B : 76.6?
C : 67.7?
D : 90?
The necessary condition for maximum of the first side lobe of n element array is __
Options
A : \frac{N?}{2}=?\frac{5?}{2}
B : \frac{N?}{2}=?\frac{3?}{2}
C : \frac{N?}{2}=?\frac{?}{2}
D : \frac{N?}{2}=?\frac{4?}{2}
The necessary condition for the direction of maximum first side lobe level of the 8-element isotropic array is ___
Options
A : \frac{3}{8} ?
B : \frac{3}{4} ?
C : \frac{1}{8} ?
D : \frac{5}{8} ?
The necessary condition for the direction of maximum side lobe level of the N-element isotropic array is ___
Options
A : ?=?\frac{2s+1}{N} ?
B : ?=?\frac{2s+2}{N} ?
C : ?=?\frac{2s}{N} ?
D : ?=?\frac{2(s+1)}{N} ?
What is the direction of first null of broadside 8-element isotropic antenna having a separation of \frac{?}{4}?
Options
A : 0
B : 60
C : 30
D : 120
What is the direction of first null of broadside 8-element isotropic antenna having a separation of ?/2?
Options
A : 60?
B : 75.5?
C : 37.5?
D : 57.5?