Frequency Independent Antenna - Modes of Radiation Online Exam Quiz
Frequency Independent Antenna - Modes of Radiation GK Quiz. Question and Answers related to Frequency Independent Antenna - Modes of Radiation. MCQ (Multiple Choice Questions with answers about Frequency Independent Antenna - Modes of Radiation
If the spacing between turns of the helical antenna is zero then it acts as a __
Options
A : Loop antenna
B : Linear dipole
C : Parabolic antenna
D : Log periodic antenna
In normal mode of radiation, far field pattern is independent of number of turns in helical antenna.
Options
A : TRUE
B : FALSE
C : -
D : -
In which of the following mode of radiation low efficiency and narrow bandwidth is observed?
Options
A : Normal mode
B : Axial mode
C : Conical mode
D : Beam mode
In which of the following mode, the helical antenna has narrow bandwidth?
Options
A : Normal mode
B : Axial mode
C : Beam mode
D : End-fire mode
In which of the following mode, there are no minor lobes at oblique angles in radiation pattern?
Options
A : Normal mode
B : Axial mode
C : Conical mode
D : Beam mode
In which of the following modes, the dimension of the helical antenna circumference is greater than the wavelength?
Options
A : Normal mode
B : Axial mode
C : Conical mode
D : Beam mode
In which of the following the radiation of helical antenna is broadside?
Options
A : Normal mode
B : Axial mode
C : Conical mode
D : Beam mode
The radiation pattern of the helical antenna is a combination of small dipole and loop antenna.
Options
A : TRUE
B : FALSE
C : -
D : -
Which of the following is false regarding normal mode of radiation of helical antenna?
Options
A : The dimensions of the antenna are small compared to the wavelength
B : The far field pattern is independent of the number of turns
C : The current is assumed to vary along the length of the antenna
D : The radiation is normal to the direction of the axis
Which of the following is the condition for the normal mode of radiation?
Options
A : The dimensions of antenna must be smaller compared to the wavelength
B : The dimensions of antenna must be approximately equal to the wavelength
C : The dimensions of antenna must be greater compared to the wavelength
D : The dimensions of antenna must be approximately equal to or greater than the wavelength
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