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1)(a) Describ how balanced modulator is used to generate SSB AM wave with a neat and suitable diagram.

(b) For a modulation Co-efficient m=0.2 and an unmodulated carrier power Pc = 1000W, find out

(i) Total sideband power

(ii) Upper and Lower side band power

(iii) Total transmitted power.

2) With a neat and suitable diagram describe the working principle and operation of Super Hetrodyne AM receiver and prepare down its advantage over TRF receivers.

3) Describe the working operation of FM Reactance modulator by using essential diagrams and equations.

4) Describe the principle and working of Foster Seeley Discriminator with suiatble diagram.

5) Describe about the operation of a PCM based Communication system in detail.

6) Define and prove Nyquist’s sampling Theorem.

7) With a neat and suitable block diagram describe the operation of QPSK transmitter and Receiver.

8) Describe the operation of M-ary FSK based communication system with a neat and suitable diagram and prepare down it’s advantages over other system.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M913430

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