Microwave Communication Which of the following operating frequencies is used for the modern loran navigational system? Loran B: 900 kHz Loran D: 10.2 kHz Loran A: 1950 kHz Loran C: 100 kHz Loran B: 900 kHz Loran D: 10.2 kHz Loran A: 1950 kHz Loran C: 100 kHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The cavity resonator Produces a frequency which is independent of the cavity size. Is equivalent to an LC resonant circuit In a reflect klystron has its output taken from the reflector plate Has a low Q factor for narrow operation. Produces a frequency which is independent of the cavity size. Is equivalent to an LC resonant circuit In a reflect klystron has its output taken from the reflector plate Has a low Q factor for narrow operation. ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What do you call an attenuation that occurs over many different wavelengths of the carrier? Rician fading Slow fading Rayleigh fading Wavelength fading Rician fading Slow fading Rayleigh fading Wavelength fading ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance. Sixth Third Fifth Fourth Sixth Third Fifth Fourth ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The aquadag coating on the inside of PPI tube is used As a second anode and to prevent the build-up of secondary field To focus the beam of primary electrons All of these To shield the electron beam from unidirectional magnetic As a second anode and to prevent the build-up of secondary field To focus the beam of primary electrons All of these To shield the electron beam from unidirectional magnetic ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What allow microwave to pass in only one direction? Ferrite emitter Capacitor Varactor-triac RF emitter Ferrite emitter Capacitor Varactor-triac RF emitter ANSWER DOWNLOAD EXAMIANS APP
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