Related Questions

Tropospheric scatter propagation is not subject to any fading.
A True
B False
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?
A It is narrow band of high-velocity wind.
B It\ \follows\ \the\ \wave\ \path\ \near\ \the tropopause at elevations of 8 km to 15 km.
C Jet\ streams\ are typically\ continuous over long distances.
D In summer, the polar front jet achieves its maximum force.
The lower and upper cut off frequencies are also called ___________ frequencies
A Sideband
B Resonant
C Half-resonant
D Half-power
A band-stop filter passes frequencies between its lower and upper critical frequencies and rejects all others.
A True
B False
Frequencies above ___________ kHz are called radio frequencies
A 2
B 10
C 50
D 200
The closest meaning of "Scatter" is---
A Disperse
B Moist
C Trust
D Damp
The term 'choke' is more commonly used in connection with an inductor used to block off high frequencies.
A True
B False
Which inductor is used at high frequencies?
A Cast iron cored
B Sheet steel cored
C Iron alloy cored
D Ceramic cored
RC coupling is not used to amplify extremely low frequencies because
A There is considerable power loss
B There is hum in the output
C Electrical size of coupling capacitor becomes very large
D None of the above
An LC oscillator cannot be used to produce ___________ frequencies
A High
B Audio
C Very low
D Very high

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