Communication Systems Fourier analysis indicate that a square wave can be represented as A fundamental sine wave and even harmonics A fundamental sine wave and odd harmonics A fundamental sine wave and harmonics Fundamental and subharmonic sine waves A fundamental sine wave and even harmonics A fundamental sine wave and odd harmonics A fundamental sine wave and harmonics Fundamental and subharmonic sine waves ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Commercial Frequency deviation of FM is 80 kHz 70 kHz 75 kHz 65 kHz 80 kHz 70 kHz 75 kHz 65 kHz 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 increases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases Amplitude of distant sidebands increases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. -3 2 3 1 -3 2 3 1 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Reactance FET modulator Varactor diode modulator Armstrong modulator Reactance bipolar transistor Reactance FET modulator Varactor diode modulator Armstrong modulator Reactance bipolar transistor ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Twist the transmission line Change the antenna orientation of location Connect a booster Use a longer transmission line Twist the transmission line Change the antenna orientation of location Connect a booster Use a longer transmission line ANSWER DOWNLOAD EXAMIANS APP
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