Communication Systems Which of the following is an indirect way of generating FM? Reactance bipolar transistor Reactance FET modulator Armstrong modulator Varactor diode modulator Reactance bipolar transistor Reactance FET modulator Armstrong modulator Varactor diode modulator ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a TV receiver antenna the length of reflector rod Is less than that of dipole Is more than that of dipole Is the same as that of dipole May be equal, more or less than that of dipole Is less than that of dipole Is more than that of dipole Is the same as that of dipole May be equal, more or less than that of dipole ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Is caused by reflection Results from longitudinal nature of waves Is due to transverse nature of waves Is always vertical in an isotropic medium Is caused by reflection Results from longitudinal nature of waves Is due to transverse nature of waves Is always vertical in an isotropic medium ANSWER DOWNLOAD EXAMIANS APP
Communication Systems FM transmitting and receiving equipment as compared to AM equipment is Costly Almost equally costly None of these Cheaper Costly Almost equally costly None of these Cheaper ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. 113 102.3 70.2 80.9 113 102.3 70.2 80.9 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies It results in better reception None of these It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies It results in better reception None of these ANSWER DOWNLOAD EXAMIANS APP
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