Microwave Communication The frequency of the oscillation generated by a magnetron, is mainly determined by The ratio of the dc cathode voltage to the magnetic flux density The number of the cavity resonators The flux density of the external magnet The dimension of each cavity resonator The ratio of the dc cathode voltage to the magnetic flux density The number of the cavity resonators The flux density of the external magnet The dimension of each cavity resonator ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the reception problems below that is not due to multipath? Rayleigh fading Delayed spreading Slow fading Random Doppler shift Rayleigh fading Delayed spreading Slow fading Random Doppler shift ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication __________ is the progressive decrease of signal strength with increasing distance. Radiation Modulation Propagation Attenuation Radiation Modulation Propagation Attenuation 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/RL S = 2λR/L S = 3λR/L S = λR/L S = λR/RL S = 2λR/L S = 3λR/L S = λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A magnetron is operated at a duty cycle of 0.001. It has a peak power output of 100 kilo-watts. Its average power is 100 watts 10,000 watts 1,000 watts 1,000,000 watts 100 watts 10,000 watts 1,000 watts 1,000,000 watts ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Calculate the effective earth’s radius if the surface refractivity is 301. 6370 km 8493 km 6370 mi 8493 mmi 6370 km 8493 km 6370 mi 8493 mmi ANSWER DOWNLOAD EXAMIANS APP
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