Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 3 2 -3 1 3 2 -3 1 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization None of these Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams Involves critical alignment of transmitting and receiving antenna None of these Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams Involves critical alignment of transmitting and receiving antenna ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For AM receivers the standard IF frequency is 106 kHz 1.07 MHz 10.7 MHz 455 kHz 106 kHz 1.07 MHz 10.7 MHz 455 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Stepped index operation Attenuation in glass Microbending Impurities Stepped index operation Attenuation in glass Microbending Impurities ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 0.8 1 0.5 0.8 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If sampling is done at the rate of 10 kHz. The bandwidth required is 35 kHz 1280 kHz 70 kHz 10 kHz 35 kHz 1280 kHz 70 kHz 10 kHz ANSWER DOWNLOAD EXAMIANS APP
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