Communication Systems Full duplex operation permits transmission in both directions at the same time. True False True False ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is Two tone modulation FSK Single tone modulation PCM Two tone modulation FSK Single tone modulation PCM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a TV receiver antenna the length of reflector rod Is less than that of dipole May be equal, more or less than that of dipole Is more than that of dipole Is the same as that of dipole Is less than that of dipole May be equal, more or less than that of dipole Is more than that of dipole Is the same as that of dipole ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Non-linear devices Class C amplifiers Linear devices Harmonic devices Non-linear devices Class C amplifiers Linear devices Harmonic devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Leak type bias is used in plate modulated class C amplifier to Prevent over modulation Increase the bandwidth Prevent excessive grid current Prevent tuned circuit damping Prevent over modulation Increase the bandwidth Prevent excessive grid current Prevent tuned circuit damping 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
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