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 decreases Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands decreases Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The direction of rotation of a CD is Clockwise or anticlockwise depending on frequency of data stored Mostly anticlockwise but some times clockwise Clockwise Anticlockwise Clockwise or anticlockwise depending on frequency of data stored Mostly anticlockwise but some times clockwise Clockwise Anticlockwise ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Leak type bias is used in plate modulated class C amplifier to Increase the bandwidth Prevent tuned circuit damping Prevent excessive grid current Prevent over modulation Increase the bandwidth Prevent tuned circuit damping Prevent excessive grid current Prevent over modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A woofer should be fed from the input through a High pass filter Band pass filter Band stop filter Low pass filter High pass filter Band pass filter Band stop filter Low pass filter 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 The reflected colour The wavelength transmitted through it None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour The wavelength transmitted through it None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied Resultant wave Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied Resultant wave Voltage with constant frequency, phase or amplitude ANSWER DOWNLOAD EXAMIANS APP
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