Which of the following is true regarding the axial mode of radiation in helical antenna?(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 wavelengthThis question was addressed to me during an interview for a job.Origin of the question is Frequency Independent Antenna topic in portion Frequency Independent Antenna of Antennas

Which of the following is true regarding the axial mode of radiation i

1.	Which of the following is true regarding the axial mode of radiation in helical antenna?(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 wavelengthThis question was addressed to me during an interview for a job.Origin of the question is Frequency Independent Antenna topic in portion Frequency Independent Antenna of Antennas
Answer» The correct choice is (a) Radiation is broad, directional along axis and produces MINOR lobes For explanation: In Axial MODE of radiation, the radiation is in end-fire direction along the HELICAL axis. The radiation pattern of the antenna is broad, directional along axis and produces minor lobes at oblique ANGLES. The dimensions of antenna are approximately in the ORDER of the wavelengths.

Discussion

No Comment Found

Related InterviewSolutions

The geometrical design of the Log periodic depends on _____(a) Scaling factor(b) Gain(c) Impedance(d) StabilityThe question was posed to me in final exam.This interesting question is from Frequency Independent Antenna in division Frequency Independent Antenna of Antennas
If the spacing between turns of the helical antenna is zero then it acts as a ________(a) Loop antenna(b) Linear dipole(c) Parabolic antenna(d) Log periodic antennaI got this question during an interview for a job.This interesting question is from Frequency Independent Antenna in chapter Frequency Independent Antenna of Antennas
For a helical antenna radiation, the pitch angleα should be _____(a) 0 < α < 90(b) α=0(c) α=90(d) α=0 or 90I had been asked this question during an online exam.This interesting question is from Frequency Independent Antenna topic in portion Frequency Independent Antenna of Antennas
What is the Input impedance of the axial feed helical antenna with circumference per unit wavelength is 1.2?(a) 168Ω(b) 186Ω(c) 198Ω(d) 158ΩI have been asked this question in examination.I need to ask this question from Frequency Independent Antenna in division Frequency Independent Antenna of Antennas
In order to get more number of channels in TV reception, we prefer Yagi-Uda than LPDA.(a) True(b) FalseI have been asked this question at a job interview.I would like to ask this question from Frequency Independent Antenna in section Frequency Independent Antenna of Antennas
Value of self complementary antenna when Zo=120π?(a) 120π(b) 60π(c) 240π(d) 30πI had been asked this question in quiz.Question is from Frequency Independent Antenna in section Frequency Independent Antenna of Antennas
Which of the following does not belongs to frequency independent antenna?(a) Spiral antenna(b) Log periodic antenna(c) Helical antenna(d) Parabolic antennaThis question was posed to me during an interview for a job.The question is from Frequency Independent Antenna topic in section Frequency Independent Antenna of Antennas
What is the ratio of maximum frequency to minimum frequency if the scaling factor is 0.5 for 5 elements LPDA?(a) 16(b) 2(c) 4(d) 8The question was asked in a national level competition.This question is from Frequency Independent Antenna in portion Frequency Independent Antenna of Antennas
Log periodic antenna uses which range of frequencies?(a) VHF and UHF(b) VHF and SHF(c) MF and VHF(d) HF and VHFThis question was posed to me in exam.I'm obligated to ask this question of Frequency Independent Antenna topic in portion Frequency Independent Antenna of Antennas
Rumsey’s principle is related to which type of antennas?(a) Frequency independent antennas(b) Frequency dependent antennas(c) Reflector antennas(d) Both Frequency independent and independent antennasThe question was posed to me by my school teacher while I was bunking the class.My doubt stems from Frequency Independent Antenna in chapter Frequency Independent Antenna of Antennas

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment