Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Non-linear devices Harmonic devices Class C amplifiers Linear devices Non-linear devices Harmonic devices Class C amplifiers Linear devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In TV systems, equalising pulses are sent during Serrations Horizontal retrace Vertical blanking Horizontal blanking Serrations Horizontal retrace Vertical blanking Horizontal blanking ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that High modulating power is needed Noise is very high for high frequency Large bandwidth is required High output power is needed High modulating power is needed Noise is very high for high frequency Large bandwidth is required High output power is needed ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz. 4.9 5 995 10 4.9 5 995 10 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In practical commercial FM system, channel bandwidth is 150 kHz 108 MHz 100 kHz 88 MHz 150 kHz 108 MHz 100 kHz 88 MHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Space diversity Broad band antenna Directional antenna Frequency diversity Space diversity Broad band antenna Directional antenna Frequency diversity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS