Microwave Communication Calculate the effective earth’s radius if the surface refractivity is 301. 6370 km 6370 mi 8493 mmi 8493 km 6370 km 6370 mi 8493 mmi 8493 km ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = λR/L S = 2λR/L S = λR/RL S = 3λR/L S = λR/L S = 2λR/L S = λR/RL S = 3λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which causes multipath or frequency selective fading? Small reflector Large reflector Further reflector Nearer reflector Small reflector Large reflector Further reflector Nearer reflector ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The coarse frequency adjustment of a reflex klystron is accomplished by The AFC system An adjustment in the synchronizer Varying the repeller voltage Adjusting the flexible wall of the resonant cavity The AFC system An adjustment in the synchronizer Varying the repeller voltage Adjusting the flexible wall of the resonant cavity ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Microwave frequencies are normally regarded as those in the range of 1000 to 10,000 GHz 1 to 500 MHz 10 to 1000 GHz 1 to 100 GHz 1000 to 10,000 GHz 1 to 500 MHz 10 to 1000 GHz 1 to 100 GHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Oscillators of a klystron tube are maintained By plate-to-cathode feedback By bunches of electrons passing the cavity grids By circulating bunches of electrons within the cavities. By feedback between the accelerating grid and the repeller By plate-to-cathode feedback By bunches of electrons passing the cavity grids By circulating bunches of electrons within the cavities. By feedback between the accelerating grid and the repeller ANSWER DOWNLOAD EXAMIANS APP
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