Microwave Communication A traveling-wave tube (TWT) amplifies by virtue of The energy liberated form the collector The energy contained the cavity resonators The absorption of energy by the signal from an electron stream The effect of an external magnetic field The energy liberated form the collector The energy contained the cavity resonators The absorption of energy by the signal from an electron stream The effect of an external magnetic field ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Calculate the effective earth’s radius if the surface refractivity is 301. 6370 mi 8493 km 8493 mmi 6370 km 6370 mi 8493 km 8493 mmi 6370 km ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The frequency of the oscillation generated by a magnetron, is mainly determined by 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 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 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 = 2λR/L S = 3λR/L S = λR/RL S = λR/L S = 2λR/L S = 3λR/L S = λR/RL S = λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Rainfall is an important factor for fading of radio waves at frequencies above 1 GHz 10 GHz 100 MHz 100 GHz 1 GHz 10 GHz 100 MHz 100 GHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a radar-set receiver, the usual mixer stage is A tunnel diode A Rochelle salts crystal A silicon crystal And FET A tunnel diode A Rochelle salts crystal A silicon crystal And FET ANSWER DOWNLOAD EXAMIANS APP
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