Microwave Communication A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be A decrease in range A decrease in gain A reduction in horizontal resolution No noticeable effect A decrease in range A decrease in gain A reduction in horizontal resolution No noticeable effect 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. Third Sixth Fourth Fifth Third Sixth Fourth Fifth 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 10,000 watts 1,000 watts 100 watts 1,000,000 watts 10,000 watts 1,000 watts 100 watts 1,000,000 watts ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the Electron transit time Distributed lead inductance Inter-electrode capacitance Degree of emission from the cathode Electron transit time Distributed lead inductance Inter-electrode capacitance Degree of emission from the cathode ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication What allow microwave to pass in only one direction? Ferrite emitter Varactor-triac RF emitter Capacitor Ferrite emitter Varactor-triac RF emitter Capacitor ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Increases receiver sensitivity for echoes from targets Improve the target bearing resolution Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Increases receiver sensitivity for echoes from targets Improve the target bearing resolution ANSWER DOWNLOAD EXAMIANS APP
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