Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Frequency diversity Broad band antenna Directional antenna Space diversity Frequency diversity Broad band antenna Directional antenna Space diversity ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Voltage for which frequency, phase or amplitude is varied Speech voltage to be transmitted Voltage with constant frequency, phase or amplitude Resultant wave Voltage for which frequency, phase or amplitude is varied Speech voltage to be transmitted Voltage with constant frequency, phase or amplitude Resultant wave ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Results from longitudinal nature of waves Is due to transverse nature of waves Is caused by reflection Is always vertical in an isotropic medium Results from longitudinal nature of waves Is due to transverse nature of waves Is caused by reflection Is always vertical in an isotropic medium 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 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 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a TV receiver antenna the length of reflector rod Is the same as that of dipole Is more than that of dipole Is less than that of dipole May be equal, more or less than that of dipole Is the same as that of dipole Is more than that of dipole Is less than that of dipole May be equal, more or less than that of dipole ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz. 995 4.9 5 10 995 4.9 5 10 ANSWER DOWNLOAD EXAMIANS APP
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