 # Electronics Engineering Objective Questions { Analog Communication System }

253.  Four signals each band-limited to 5 kHz are sampled at twice the Nyquist rate. The resulting PAM samples are transmitted over a single channel after time division multiplexing. The theoretical minimum transmission bandwidth of the channel should be equal to

254.  Which one of the followingstatements regarding the following signal : x(t) = 5 sin (2n x 1030 sin(2n x 1060 is correct?

255.  In case a signal band limited to fm is sampled at a rate less than 2 fm, the constructed signal will be

256.  An arbitrary signal m(t) has zero average value and it is band-limited to 3.2 kHz. It is sampled at the rate of 8k samples/s. The samples are passed through an ideal band-phass filter with centre frequency of 3.2 kHz and bandwidth of 6.4 kHz. The output of the band-pass filter is

257. If the radiated power of AM transmitter is 10 kW, the power in thecarrier for modulation index of 0.6 is nearly

258. One of the main functions of the RF amplifiers in a superheterodyne receiver is to

259. The phase shift method for generation of SSB signal is most suitable for

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