Space Wave Propagation - Line of Sight Distance Online Exam Quiz
Space Wave Propagation - Line of Sight Distance GK Quiz. Question and Answers related to Space Wave Propagation - Line of Sight Distance. MCQ (Multiple Choice Questions with answers about Space Wave Propagation - Line of Sight Distance
Expression for effective radius factor k in terms of radius of curvature rc and radius of earth re?
Options
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}
Gradient of refractive index is __
Options
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 temperature
If the heights of transmitting and receiving antenna are equal then LOS distance is ___ in km.
Options
A : 8.24?h
B : 4.82?h
C : 4.12?h
D : 2.06?h
Radio horizon is less than LOS distance.
Options
A : TRUE
B : FALSE
C : -
D : -
The expression for refractivity in terms of the Pressure and temperature coefficient is given by __
Options
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}
The radio horizon can be equal to the LOS distance if same height antennas are used.
Options
A : TRUE
B : FALSE
C : -
D : -
The value of k at which LOS equals to the radio horizon is ___
Options
A : 1
B : 0
C : 4-Mar
D : -0.75
What is the standard value for the radius of curvature rc to be equal to the radius of earth re?
Options
A : rc=4re
B : rc=\frac{4r_e}{3}
C : rc=re
D : rc=\frac{1}{4} re
What is the value of the effective radius factor k of earth if the radius of curvature and the earth radius equals?
Options
A : 1
B : 0
C : Infinity
D : 3-Apr
Which of the following varies with the refractive index in the atmosphere?
Options
A : Radio horizon
B : Optical horizon
C : Line of sight (LOS)
D : Both radio horizon and LOS
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