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

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}])

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} ?

Options

A : 0

B : 60

C : 30

D : 120

Options

A : 60?

B : 75.5?

C : 37.5?

D : 57.5?

Array of N-Isotropic Sources more Online Exam Quiz

Factors

Introduction

N-element Linear Array

Pattern Multiplications

Radiation Pattern for 4-Isotropic Elements

Antenna Ranges

Measurement of Gain

Near Field and Far Field

Spectrum Analyzer

Standing Wave Ratio Method