Communication Systems The disadvantage of FM over AM is that Large bandwidth is required Noise is very high for high frequency High modulating power is needed High output power is needed Large bandwidth is required Noise is very high for high frequency High modulating power is needed High output power is needed ANSWER DOWNLOAD EXAMIANS APP
Communication Systems FM transmitting and receiving equipment as compared to AM equipment is Cheaper Almost equally costly Costly None of these Cheaper Almost equally costly Costly None of these 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. 10 5 995 4.9 10 5 995 4.9 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Impurities Attenuation in glass Stepped index operation Microbending Impurities Attenuation in glass Stepped index operation Microbending 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 1 15 8 16 1 15 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation. Both A and R are correct and R is correct explanation of A A is wrong but R is correct Both A and R are correct but R is not correct explanation of A A is correct but R is wrong Both A and R are correct and R is correct explanation of A A is wrong but R is correct Both A and R are correct but R is not correct explanation of A A is correct but R is wrong ANSWER DOWNLOAD EXAMIANS APP
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