JNTUK B.Tech R19 2020 Model Question Papers || JNTU kakinada (All Branches)
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[BI9EC1101]
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I B. Tech I Semester (R19) Regular Examinations
BASIC ELECTRONICS
(Electronics and Communication Engineering)
MODEL QUESTION PAPER
TIME: 3Hrs. Max. Marks: 75
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Answer ONE Question from EACH UNIT.
All questions carry equal marks.
| CO | KL | ||
|---|---|---|---|
| UNIT-1 | |||
| 1. | a). Describe intrinsic and extrinsic semiconductors? | 1 | K2 |
| b). Derive expressions for mobility in semiconductors? | 1 | K1 | |
| OR | |||
| 2. | a). What is Hall-effect? What are its applications? | 1 | K1 |
| b). Explain Phenomenon of Drift and Diffusion in semiconductors? | 1 | K2 | |
| UNIT-II | |||
| 3. | a). What are various types of passive components? How 3 band and 4 band resistors are decoded? | 2 | K1 |
| b). Explain inductance and mutual inductance of an inductor? | 2 | K2 | |
| OR | |||
| 4. | a). With a neat sketch explain basic operation of CRO? | 2 | K2 |
| b). What are KVL and KCL? Explain each with an example? | 2 | K2 | |
| UNIT-III | |||
| 5. | a). Explain basic operation and V-I characteristics of semiconductor diode? | 3 | K2 |
| b). What is Zener diode? Explain its operation in reverse bias condition along with its applications? | 3 | K2 | |
| OR | |||
| 6. | a). Draw and explain the operation of a full wave rectifier? | 3 | K2 |
| b). Explain construction and operation of photo-diode? | 3 | K2 | |
| UNIT-1V | |||
| 7. | a). Plot the input and output characteristics of transistor in CB configuration? | 4 | K1 |
| b). List and Explain the fabrication steps of Monolithic ICs? | 4 | K2 | |
| OR | |||
| 8. | a). Explain CC configuration of transistor? | 4 | K2 |
| b). What is an IC? Write a short notes on Classification of ICs? | 4 | K1 | |
| UNIT-V | |||
| 9. | a). Convert the Decimal number 867.9 into Binary, Octal, and Hexadecimal? | K3 | |
| b). Explain operation and truth table of a) NAND b)NOR c)XOR gates. | K2 | ||
| OR | |||
| 10. | a). Explain operation and State Transition table of J-K flip-flop? | K2 | |
| b). Convert following Decimal numbers to Binary | K3 | ||
| a) 101 b) 110.1111 c) 217.67 | |||
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