ECE :: Communication Systems
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A 400 W carrier is amplitude modulated with m = 0.75. The total power in AM is
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c(t) and m(t) are used to generate an FM signal. If the peak frequency deviation of the generated FM signal is three times the transmission bandwidth of the AM signal, then the coefficient of the term cos [2p(1008 x 103t)] in the FM signal (in terms of the Bessel Coefficients) is
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Tracking of extra terrestrial objects requires
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Assertion (A): Free space does not interfere with normal radiation and propagation of radio waves
Reason (R): Free space has no magnetic or gravitational fields.
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In radar systems PRF stands for
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Which of the following cannot be the Fourier series expansion of a periodic signal?
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Which of the following is the indirect way of FM generation?
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A telephone exchange has 9000 subscribers. If the number of calls originating at peak time is 10, 000 in one hour, the calling rate is
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If C is capacity of noisy channel, (bits/s), δf is bandwidth Hz and S/N is signal to noise ratio, then
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J8(3) 
Frequency deviation = 3 . (AM Bandwidth) = 6 fm
