Communication Systems VSB modulation is preferred in TV because It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies None of these It results in better reception It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies None of these It results in better reception ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is Two tone modulation PCM FSK Single tone modulation Two tone modulation PCM FSK Single tone modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Armstrong modulator Reactance FET modulator Varactor diode modulator Reactance bipolar transistor Armstrong modulator Reactance FET modulator Varactor diode modulator Reactance bipolar transistor ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by None of these The reflected colour The wavelength transmitted through it Reflected colour for opaque object and wavelength transmitted through it for transparent objects None of these The reflected colour The wavelength transmitted through it Reflected colour for opaque object and wavelength transmitted through it for transparent objects ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Fourier analysis indicate that a square wave can be represented as A fundamental sine wave and harmonics A fundamental sine wave and odd harmonics Fundamental and subharmonic sine waves A fundamental sine wave and even harmonics A fundamental sine wave and harmonics A fundamental sine wave and odd harmonics Fundamental and subharmonic sine waves A fundamental sine wave and even harmonics ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The direction of rotation of a CD is Mostly anticlockwise but some times clockwise Clockwise or anticlockwise depending on frequency of data stored Anticlockwise Clockwise Mostly anticlockwise but some times clockwise Clockwise or anticlockwise depending on frequency of data stored Anticlockwise Clockwise ANSWER DOWNLOAD EXAMIANS APP
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