Frequency Independent Antenna - Log Periodic Antenna Introduction Online Exam Quiz

Frequency Independent Antenna - Log Periodic Antenna Introduction GK Quiz. Question and Answers related to Frequency Independent Antenna - Log Periodic Antenna Introduction. MCQ (Multiple Choice Questions with answers about Frequency Independent Antenna - Log Periodic Antenna Introduction

Drawbacks of the normal mode of radiation in helical antenna are ___

Options

A : low radiation efficiency and narrow bandwidth

B : high radiation efficiency and narrow bandwidth

C : low radiation efficiency and Broad bandwidth

D : high radiation efficiency and broad bandwidth

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In which of the following mode the dimensions of the antenna must be smaller compared to the wavelength?

Options

A : Normal mode

B : Axial mode

C : Beam mode

D : End-fire mode

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In which of the following mode, the radiation is perpendicular to the axis of helical antenna?

Options

A : Normal mode

B : Axial mode

C : Beam mode

D : End-fire mode

View Answer

Which of the following expression is correct?

Options

A : \frac{L_N}{L_{N+1}} = \frac{S_N}{S_{N+1}} = ?

B : \frac{L_N}{L_{N+1}} = \frac{S_{N+1}}{S_N} = ?

C : \frac{L_N}{L_{N+1}} = \frac{S_{N+1}}{S_N} = \frac{1}{?}

D : \frac{L_N}{L_{N+1}} = \frac{S_N}{S_{N+1}} = \frac{1}{?}

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Which of the following is true regarding the axial mode of radiation in helical antenna?

Options

A : Radiation is broad, directional along axis and produces minor lobes

B : Radiation pattern is narrow and no minor lobes are produced

C : Minor lobes are produced only along the direction of helical axis

D : The dimensions of antenna are smaller than the wavelength

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Which of the following modes of radiation, the radiation of helical antenna is along the end-fire direction?

Options

A : Axial mode

B : Normal mode

C : Perpendicular mode

D : Beam mode and Normal mode

View Answer

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