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| CBCSISCHENE isn | BESCK204C Second Semester B.E./B.Tech. Degree Examination, June/July 2023 Introduction to Electronics and Communication Time: 3 hrs. Max. Marks: 100 Note: 1. Answer any FIVE full questions, choosing ONE full question from each module. 2. Mi: Marks, L: Bloom's level , C: Course outcomes. Module -1 M|[L Cc Q.1 | a. | What is Regulated Power Supply? With neat block diagram, explain the | 8 | L2 | COL working of DC power supply. Also mention the principal components used in each block. b. | What is an Amplifier? Explain the types of Amplifier. 4] 12) col c. | With neat circuit diagram and wave forms explain full wave bridge | 8 | L2 | COIL rectifier, OR Q.2 Ja. ] What is Voltage Regulator? With neat circuit diagram, explain the | 7 | L2 | COT operation of a voltage regulator using Zener diode. b. | Mention the advantages of negative feedback in amplifier circuits. With | 7 | L2 | COT relevant equations and diagram, explain the concept of negative feedback, ce. | What is Voltage Multiplier? With circuit diagram, explain the operation of | @ | L2 | COL voltage doubler. Module —2 Q.3 | a.) What is Op — Amp? Explain the various parameters of Operational | 7 | L2 | CO2 Amplifier. b, | Sketch the circuits of each of the following based on the use of Op = amp | 7 | L2 | CO2 along with input and output wave forms : i) Integrator ii) Voltage follower — iii), Comparator. ce. | Explain the operation of three — stage ladder RC Network Oscillator with | 6 | L2 | COZ neat circuit diagram. OR Qa | a. | Explain the Barkhausen criteria for Oscillations. In wein bridge oscillator if | 7 | L3 | CO2 C,; = Cy = 100 nF, determine the frequency of oscillations when Ry = Ry= 1kQ. b. | Explain the operation of Single stage Astable multivibrator with its circuit | 7 | L2 | CO2 diagram. ¢e. | Explain the Ideal characteristics of an Op — amp. 6 | L2 | co2 lof2 C Scanned with OKEN Scanner BESCK204C Module -3 Q.5 | a. | Convert the following : 8 | L3 | CO3 i) (1 AD.EO)6= (0 ii) (37.625) =¢ ii) CLIOLOOLLIOOL.AIO) = (2) iv) GAS.AB)i6 = b. | State and prove De — Morgan's theorems with its truth table. 6 | L2 | CO3 e. | Implement the following Boolean functions by using logic gates : 6 | L3 | CO3 i) Fyre xy'+x'z ii) Fy = x'y'2 + x'y2+ xy’. OR Q.6 | a. | Perform the following : 8 | L3 | CO3 1) (1010100); — (1000100); using I’s complement and 2's complement method. ii) (4486))9 — (34234): using 9's complement and 10's complement method. b. | Implement full adder circuit with its truth table and write the expressions | 6 | L3 | CO3 for sum and carry. ec. | Express the Boolean function F = A+ B'C ina sum of min terms. 6 | L3| COs Module -4 Q.7 | a. | What is an Embedded system? Compare Embedded system and General | 7 | L2 | CO4 computing system. b. | Using suitable diagrams, explain Instrumentation and Control System. 7 | L2 | Cod e. | Discuss major application areas of Embedded systems with examples, 6 |L2/ Cco4 OR Q.8 | a. | Write anote on Core of Embedded systems with its block diagram. 7) L2) Cod b. | Explain how 7 seg LED display can be used to display the data and write a] 7 | L2 | CO4 brief note on operation of LED. c. | Explain the classification of Embedded systems. 6 | L2| CO4 Module -5 Q.9 | a. | Describe the blocks of Modem Communication System with neat block] 8 | L2 | COS diagram, b. | Explain with a neat diagram, the concept of Radio wave propagation and its |7 | L2 | COS different types. c. | Explain different Multiple Access Techniques. 5 | L2| Cos OR Q.10 | a. | What is Modulation? Explain Amplitude Modulation (AM) and Frequency] 8 | L2 | COS Modulation (FM), with neat waveforms. b.| List) the advantages of Digital Communication over Analog |6 | L2 | COS Communication. ¢. | Explain the following with the help of waveforms : 6 | L2/ Cos i) ASK ii) FSK iii) PSK. wears C Scanned with OKEN Scanner 
