Engineering B.E. (Computer Engineering) Sem 3 Electronic Circuits and Communication Fundamentals Dec 2018 R16 Question Paper - Mumbai University | munotes
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Semester-end · Electronic Circuits and Communication Fundamentals
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Questions asked in this paper
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Q2 Solve any THREE out of remaining questions
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Q3 Draw neat and clean diagrams
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Q4 Assume suitable data if required
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Q1 the concept and significance of CMRR and Slew Rate in case of op-amps. 5 marks
- B. Given B=120 and Ig= 3.2 mA for a common-emitter configuration with Q,
- (b) Ay if a load of 2 kQ is applied
- (c) Ai with the 2 kQ load. 5
- C. Discuss the factors that influence modulation index of an FM wave. 5
- D. Justify that adaptive delta modulation superior to delta modulation. 5 emitter bias configuration as shown in following figure has the specifications: Determine Rc, Re and Rp. 10
- B. Explain how op-am can be used comparator and zero crossing detector. 10 Paper Subject Code: 50904 Electronics Circuits and Communication Fundamentals is the source of the leakage current in a transistor? If the emitter current of a transistor is 8 mA and Ip is 1/100 of Ic, determine the levels of Ic and Ip. 5
- B. Draw and explain Colpitts oscillator. 5
- C. Explain principle of FDM. 5
- D. Determine the output voltage for the circuit if Vi=5V and V2=3V
- A. What is DSBSC wave and explain its generation using balanced modulator. 10
- B. What is multiplexing in communication system? Draw block diagram of TDM-PCM system and explain. 10 Shannon’s theorem on channel capacity What is the maximum capacity of a perfectly noiseless channel whose bandwidth is 120 Hz, in which the values of the data transmitted may be indicated by any one of the
- B. With respect to neat diagram explain the elements of analog communication system. 10
- A. What is meant by Nyquist rate in sampling and explain its significance. 5
- B. Give the proper definition for entropy and information rate. 5
- C. Write short note on op-amp as differentiator. 5
- D. Differentiate between Class A and Class C power amplifiers with respect to circuit diagram, operating cycle and power efficiency. 5
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