Communication Systems Leak type bias is used in plate modulated class C amplifier to Prevent tuned circuit damping Prevent over modulation Increase the bandwidth Prevent excessive grid current Prevent tuned circuit damping Prevent over modulation Increase the bandwidth Prevent excessive grid current ANSWER DOWNLOAD EXAMIANS APP
Communication Systems One of the advantages of base modulation over collector modulation of a transistor class C amplifier is The lower modulating power requirement High power output per transistor Better linearity Improved efficiency The lower modulating power requirement High power output per transistor Better linearity Improved efficiency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A buffer amplifier is A double-tuned amplifier A cathode follower stage None of these A high gain D.C. amplifier A double-tuned amplifier A cathode follower stage None of these A high gain D.C. amplifier 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. 10 995 5 4.9 10 995 5 4.9 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because None of these It reduces the bandwidth requirement to half It results in better reception It avoids phase distortion at low frequencies None of these It reduces the bandwidth requirement to half It results in better reception It avoids phase distortion at low frequencies ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS