Space Wave Propagation - Refractivity Online Exam Quiz
Space Wave Propagation - Refractivity GK Quiz. Question and Answers related to Space Wave Propagation - Refractivity. MCQ (Multiple Choice Questions with answers about Space Wave Propagation - Refractivity
Expression for refractivity is given by ___
Options
A : N=(n-1)?106
B : N=(n-1)?10-6
C : N=1/(n-1)
D : N=\frac{1}{n-1}?10-6
On which of the following the refractivity depends on?
Options
A : Air pressure
B : Water pressure
C : Temperature
D : Air pressure, water pressure and temperature
Refractive index is directly proportion to ___
Options
A : \sqrt{?_r}
B : 1/\sqrt{?_r}
C : ?r
D : 1/?r
Relation between gradient of refractive index with height and dielectric constant gradient is __
Options
A : \frac{d?_r}{dH}=2n \frac{dn}{dH}
B : \frac{d?_r}{dH}=n \frac{dn}{dH}
C : \frac{d?_r}{dH}=2n/\frac{dn}{dH}
D : \frac{d?_r}{dH}=-2n \frac{dn}{dH}
The tropospheric scattering occurs at ___
Options
A : Beyond the LOS
B : In ground wave propagation
C : In sky wave propagation
D : Below the radio horizon
Tropospheric propagation is also known as forward scatter propagation.
Options
A : TRUE
B : FALSE
C : -
D : -
Tropospheric scattering, if falls under low frequencies then it leads to Ionosphere scattering.
Options
A : TRUE
B : FALSE
C : -
D : -
What is the effective radius factor when radius of curvature is 4 times the radius of earth?
Options
A : 4
B : 3-Apr
C : 3
D : 4-Mar
What is the frequency at which tropospheric scatter occurs?
Options
A : Above 30MHz
B : Below 30 MHz
C : < 3MHz
D : > 3 MHz and < 30MHz
What is the range of frequency at which tropospheric scatter occurs?
Options
A : UHF and Microwave range
B : HF
C : MF and VHF
D : MF and HF
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