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For the following questions answer them individually
Two carriers of 2 GHz and 4 GHz respectively are frequency modulate by a signal of 10KHz, such that bandwith of the FM signal in the two cases are same. The peak deviation in the two cases are in the ratio of
The bandwidth required for QPSK modulated channel is
The gain G of an antenna of effective area A is given by
If the short circuit and open circuit impedance ofa line are 5 and 20Ω respectively the characteristic impedanceis given by
The input impedance of short circuited line of length l where $$\frac{\lambda}{4} < l < \frac{\lambda}{2}$$, is
Noise figure of an amplifier depends on
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