Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 1 2 3 -3 1 2 3 -3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which one of the following is analog? PCM Delta modulation PWM Differential PCM PCM Delta modulation PWM Differential PCM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A buffer amplifier is A high gain D.C. amplifier A double-tuned amplifier None of these A cathode follower stage A high gain D.C. amplifier A double-tuned amplifier None of these A cathode follower stage ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by Reflected colour for opaque object and wavelength transmitted through it for transparent objects None of these The wavelength transmitted through it The reflected colour Reflected colour for opaque object and wavelength transmitted through it for transparent objects None of these The wavelength transmitted through it The reflected colour 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 6E 3E 2E 4E 6E 3E 2E 4E ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because It avoids phase distortion at low frequencies It reduces the bandwidth requirement to half It results in better reception None of these It avoids phase distortion at low frequencies It reduces the bandwidth requirement to half It results in better reception None of these ANSWER DOWNLOAD EXAMIANS APP
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