Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. -3 3 1 2 -3 3 1 2 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is 8 16 15 1 8 16 15 1 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A zero mean white Gaussian noise is passed through an ideal low pass filter of bandwidth 10 kHz. The output of the samples so obtained would be Uncorrelated Orthogonal Statistically independent Correlated Uncorrelated Orthogonal Statistically independent Correlated ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by 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 Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Monostable multi-vibrator Schmitt trigger JK flip-flop Free running multi-vibrator Monostable multi-vibrator Schmitt trigger JK flip-flop Free running multi-vibrator ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is a digital modulation technique? PSK PCM All DM PSK PCM All DM ANSWER DOWNLOAD EXAMIANS APP
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