A communication channel having an operating wavelength of `lambda` metre can use only x% of its source frequency as its channel bandwidth . If the sys
A communication channel having an operating wavelength of `lambda` metre can use only x% of its source frequency as its channel bandwidth . If the system is to be used for transmitting T.V. signals requiring a bandwidth of F Hertz . How many channels can this system transmit simultaneously ?
A. `(xc)/(100lambdaF)`
B. `(100lambdaF)/(xc)`
C. `sqrt((xc)/(lambdaF))`
D. `sqrt((100lambdaF)/(xc))`
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Correct Answer - A
Source frequency `f=c/lambda`
`therefore` Bandwidth of the channel =x% of f `=x/100 xx c/lambda=(xc)/(100lambda)`
`therefore` Number of channels = `"Total bandwidth of channel"/"Bandwidth of each channel"`
`therefore N=(xc)/(100lambda)xx1/F`
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