Related InterviewSolutions

• Which of the following is used for communication in rugged terrain where normal propagation methods fail?(a) Tropospheric Scattering(b) Ground wave(c) LOS(d) Radio HorizonThis question was addressed to me during an interview.My question comes from Space Wave Propagation topic in section Space Wave Propagation of Antennas
• For duct propagation the necessary condition is \(\frac{dμ}{dh}\) is always +ve.(a) False(b) TrueThis question was posed to me during an internship interview.The origin of the question is Space Wave Propagation topic in chapter Space Wave Propagation of Antennas
• What is the frequency at which tropospheric scatter occurs?(a) Above 30MHz(b) Below 30 MHz(c) < 3MHz(d) > 3 MHz and < 30MHzI had been asked this question in unit test.My question is from Space Wave Propagation topic in chapter Space Wave Propagation of Antennas
• Gradient of refractive index is ____________(a) Change in the refractivity with respect to height(b) Change in the height with respect to refractivity(c) Change in the refractivity with respect to Pressure(d) Change in the refractivity with respect to temperatureThis question was addressed to me in an interview for internship.This key question is from Space Wave Propagation in section Space Wave Propagation of Antennas
• The expression for refractivity in terms of the Pressure and temperature coefficient is given by ____________(a) \(\frac{77.6}{T}P+4810 \frac{e}{T} \)(b) \(\frac{77.6}{P}T+4810 \frac{e}{T} \)(c) \(\frac{77.6}{P}T+4810 \frac{T}{e} \)(d) \(\frac{77.6}{T}P+4810 \frac{T}{e} \)This question was addressed to me during an interview.The doubt is from Space Wave Propagation topic in chapter Space Wave Propagation of Antennas
• Which of the following varies with the refractive index in the atmosphere?(a) Radio horizon(b) Optical horizon(c) Line of sight (LOS)(d) Both radio horizon and LOSThe question was asked in an interview.Query is from Space Wave Propagation topic in portion Space Wave Propagation of Antennas
• Which of the following statements regarding tropospheric scattering is false?(a) It occurs in the region near to the mid-point of the transmitter and receiver(b) It occurs above the radio horizon(c) It travels beyond the line of sight distance(d) It occurs below the radio horizonI have been asked this question in an interview for job.My question comes from Space Wave Propagation in portion Space Wave Propagation of Antennas
• Expression for effective radius factor k in terms of radius of curvature rc and radius of earth re?(a) \(k=\frac{1}{1-\frac{r_c}{r_e}} \)(b) \(k=\frac{1}{1-\frac{r_e}{r_c}} \)(c) \(k= 1-\frac{r_e}{r_c} \)(d) \(k= 1-\frac{r_c}{r_e} \)This question was addressed to me during an interview.This intriguing question comes from Space Wave Propagation in portion Space Wave Propagation of Antennas
• Refractive index is directly proportion to ___________(a) \(\sqrt{ϵ_r}\)(b) \(1/\sqrt{ϵ_r} \)(c) ϵr(d) 1/ϵrThis question was addressed to me by my school principal while I was bunking the class.I want to ask this question from Space Wave Propagation in division Space Wave Propagation of Antennas
• What is the value of the effective radius factor k of earth if the radius of curvature and the earth radius equals?(a) 1(b) 0(c) Infinity(d) 4/3The question was asked during an online interview.I want to ask this question from Space Wave Propagation in section Space Wave Propagation of Antennas