Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Linear devices Class C amplifiers Harmonic devices Non-linear devices Linear devices Class C amplifiers Harmonic devices Non-linear devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Pulse Code Modulation system Suffers from the disadvantage of its incompatibly with TDM Quantising noise can be overcome by companding Large bandwidth is required Quantising noise can be reduced by decreasing the number of standard levels Suffers from the disadvantage of its incompatibly with TDM Quantising noise can be overcome by companding Large bandwidth is required Quantising noise can be reduced by decreasing the number of standard levels ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is PCM Single tone modulation Two tone modulation FSK PCM Single tone modulation Two tone modulation FSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as 2E 4E 6E 3E 2E 4E 6E 3E ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Stepped index operation Microbending Impurities Attenuation in glass Stepped index operation Microbending Impurities Attenuation in glass ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A buffer amplifier is None of these A double-tuned amplifier A high gain D.C. amplifier A cathode follower stage None of these A double-tuned amplifier A high gain D.C. amplifier A cathode follower stage ANSWER DOWNLOAD EXAMIANS APP
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