Communication Systems Which of the following is a digital modulation technique? DM All PCM PSK DM All PCM PSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Commercial Frequency deviation of FM is 80 kHz 65 kHz 70 kHz 75 kHz 80 kHz 65 kHz 70 kHz 75 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by 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 None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A cordless telephone using separate frequencies for transmission in base and portable units is known as Duplex arrangement Neither A nor B Either A or B Half duplex arrangement Duplex arrangement Neither A nor B Either A or B Half duplex arrangement ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Pulse Code Modulation system Suffers from the disadvantage of its incompatibly with TDM Quantising noise can be overcome by companding Large bandwidth is required Quantising noise can be reduced by decreasing the number of standard levels Suffers from the disadvantage of its incompatibly with TDM Quantising noise can be overcome by companding Large bandwidth is required Quantising noise can be reduced by decreasing the number of standard levels ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Results from longitudinal nature of waves Is caused by reflection Is always vertical in an isotropic medium Is due to transverse nature of waves Results from longitudinal nature of waves Is caused by reflection Is always vertical in an isotropic medium Is due to transverse nature of waves ANSWER DOWNLOAD EXAMIANS APP
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