Code No: NR220101 NR

II B.Tech II Semester Supplementary Examinations, Aug/Sep 2006APPLIED ELECTRONICS

(Civil Engineering)Time: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

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1. (a) Draw the circuit diagram for CE configuration and explain the static charac-teristics? [8]

(b) Explain about universal gates along with truth tables? [8]

2. (a) Explain about regulated power supply along with block diagram? [8]

(b) A halfwave rectifier has load resistance of 10,000 and shunt filter capacitorof 10pF. The applied sinusoidal voltage has amplitude of 20V and frequencyof 50 cycles/second. The angle of conduction is 360. Assuming the rectifierto be ideal, Calculate cut in angle, d.c. load current, d.c. output voltge andripple factor. [8]

3. (a) What is Barkhausen Criterion? [8]

(b) An amplifier requires an input signal of 60mV to produce a certain outputwith a negative feedback to get the same output, the required input signalis 0.5V. The voltage gain with feedback is 90. Find the open loop gain andfeedback factor. [8]

4. (a) Explain about the principle of operation of multimeter? [8]

(b) Design Mod-8 Counter? [8]

5. (a) Compare the performances of CB, CE and CC amplifiers? [10]

(b) Explain about line and load regulation? [6]

6. (a) Explain about crystal oscillator? [8]

(b) Explain about V-I characteristics of a PN junction diode? [8]

7. (a) Distinguish between Avalanche and Zener breakdown? [8]

(b) Derive an expressin for the ripple factor of halfwave rectifier with L-filter. [8]

8. (a) Explain about strain guage tranducer? [8]

(b) How the pressure is measured using transducer? [8]

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