Construction of Yagi - Uda Online Exam Quiz

Construction of Yagi - Uda GK Quiz. Question and Answers related to Construction of Yagi - Uda. MCQ (Multiple Choice Questions with answers about Construction of Yagi - Uda

Find the critical frequency when the refractive index of the layer is 0.54 and MUF is 9MHz?

Options

A : 0.84MHz

B : 7.57MHz

C : 0.75MHz

D : 8.4MHz

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For a feeder length of 0.5?, which among the following would be the director length?

Options

A : 0.525?

B : 0.455?

C : 0.493?

D : 0.55?

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For a feeder length of 0.5?, which among the following would be the reflector length?

Options

A : 0.525?

B : 0.425?

C : 0.23?

D : 0.35?

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For a regular layer, the critical frequency is proportional to the __ of electron density.

Options

A : Square

B : Inverse

C : Square root

D : Inverse square root

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If length of the reflector, driven element, director islr, lde, ld, respectively then the order in the increasing order of their lengths is ___

Options

A : lr, lde, ld

B : ld, lde, lr

C : lde, lr, ld

D : lr, lde, lde

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If the input impedance of a half wave dipole Yagi-Uda is 73?, then input impedance of a half wave folded dipole as driven element is __

Options

A : 73?

B : 146?

C : 36.5?

D : 292?

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The value of refractive index when the MUF is equal to the critical frequency is __

Options

A : 1

B : 0

C : 0.5

D : 0.29

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What is the critical frequency when the electron density in the F1 layer is 20?1010/cm3?

Options

A : 40.2GHz

B : 4.02 MHz

C : 40.2 MHz

D : 40.2Hz

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What is the Director length (in feet) for a three element Yagi-Uda array, operating at a frequency 500MHz?

Options

A : 0.91

B : 1

C : 2

D : 0.5

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What is the driven length (in feet) for a three element Yagi-Uda array, operating at a frequency 500MHz?

Options

A : 0.95

B : 0.2

C : 1

D : 2

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