Space Wave Propagation - Duct Propagation Online Exam Quiz
Space Wave Propagation - Duct Propagation GK Quiz. Question and Answers related to Space Wave Propagation - Duct Propagation. MCQ (Multiple Choice Questions with answers about Space Wave Propagation - Duct Propagation
Condition for duct propagation is ___
Options
A : \frac{d?}{dh}d?dh is -ve
B : \frac{d?}{dh}d?dh is +ve
C : \frac{d?}{dh}d?dh is zero
D : \frac{d?}{dh} is unity
Duct propagation occurs at __
Options
A : lower atmospheric layers
B : higher atmospheric layers
C : ionospheric layers
D : any part of the atmospheric layer
Expression for radio horizon in km is __
Options
A : 4.12(\sqrt{h_t}+\sqrt{h_r})
B : 4.12(\sqrt{h_t}-\sqrt{h_r})
C : 3.56(\sqrt{h_t}+\sqrt{h_r})
D : 3.56(\sqrt{h_t}-\sqrt{h_r})
Expression for the LOS distance is ___ (km)
Options
A : 4.12(\sqrt{h_t}+\sqrt{h_r})
B : 4.12(\sqrt{h_t}-\sqrt{h_r})
C : 3.56(\sqrt{h_t}+\sqrt{h_r})
D : 3.56(\sqrt{h_t}-\sqrt{h_r})
For duct propagation the necessary condition is \frac{d?}{dh} is always +ve.
Options
A : FALSE
B : TRUE
C : -
D : -
On which of the following factors does the LOS distance depends?
Options
A : Height of receiving antenna alone
B : Height of transmitting antenna alone
C : Only on height of transmitting and receiving antenna
D : On height of transmitting and receiving antenna and effective earths radius factor k
The wavelength of the EM signal propagation in the T.I.L for duct propagation is ___
Options
A : ?=2.5h_d \sqrt{???10^{-6}}
B : ?=2.5h_d \sqrt{???10^6}
C : ?=5.2h_d \sqrt{???10^{-6}}
D : ?=25h_d \sqrt{???10^{-6}}
Which of the following order is correct?
Options
A : LOS > Radio horizon > Optical horizon
B : Radio horizon < LOS < Optical horizon
C : Radio horizon > Optical horizon > LOS
D : Optical horizon > Radio horizon > LOS
Which of the following statement is defined as line of sight distance?
Options
A : Distance covered by a direct space wave from transmitting to receiving antenna
B : Distance covered by an indirect space wave from transmitting to receiving antenna
C : Distance covered by a direct sky wave from transmitting to receiving antenna
D : Distance covered by an indirect sky wave from transmitting to receiving antenna
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