Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 300 ohm 100 ohm 1000 ohm 500 ohm 300 ohm 100 ohm 1000 ohm 500 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Directional antenna Frequency diversity Space diversity Broad band antenna Directional antenna Frequency diversity Space diversity Broad band antenna ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The main function of a balanced modulator is to Produce 100% modulation Produce balanced modulation of a carrier wave Suppress carrier signal in order to create a single-sideband or double sideband Limit noise picked by a receiver Produce 100% modulation Produce balanced modulation of a carrier wave Suppress carrier signal in order to create a single-sideband or double sideband Limit noise picked by a receiver ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that Noise is very high for high frequency High output power is needed Large bandwidth is required High modulating power is needed Noise is very high for high frequency High output power is needed Large bandwidth is required High modulating power is needed ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. 102.3 80.9 113 70.2 102.3 80.9 113 70.2 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If sampling is done at the rate of 10 kHz. The bandwidth required is 1280 kHz 70 kHz 10 kHz 35 kHz 1280 kHz 70 kHz 10 kHz 35 kHz ANSWER DOWNLOAD EXAMIANS APP
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