hana

Total Number of Questions : 32
Time : 3.00 Hours Max. Marks : 200

1. What is meant by forward energy gap in semiconductor and what is the forbidden band gap

energy of silicon ? (2 Marks)

2. Define CMRR of an operational amplifier. (2 Marks)

3. Implement NOT gate using NAND gate. (2 Marks)

⋅ 4. Define modulation index of amplitude modulation. (2 Marks)
5. What is a watchdog timer in a microcontroller ? (2 Marks)

6. What is sampling theorem ? What is the minimum sampling frequency for the proper
reconstruction of an analog signal of 1 kHz? (4 Marks)

7. The collector current of a CE transistor 15 given as 10 mA and base current is given as 50 LA.

Define and find | value of the transistor. (4 Marks)
8. What is race-around condition in J-K flip flop ? (4 Marks)
9. Why CAN bus is selected as an industrial bus in embedded systems 7 (4 Marks)
3 10. A systemis represented by the equation, y(t) = 1 x(t). Check whether the system is linear
or not 7 (4 Marks)
| 11. What is meant by base width modulation ? (5 Marks)
| 12. oe ന്‌ प for the given system with output y(t) and input x(t) : (5 Marks)
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13. Why optic fiber is preferred over copper cables ? (5 Marks)
14. What is the difference between Harvard architecture and Von Neumann architecture in
microprocessors ? (5 Marks)
15. Convert the given decimal number to equivalent binary value : 127, (5 Marks)

16. Draw the inverting amplifier using an op amp. Write the equation for the gain of the
amplifier. (5 Marks)

17. Illustrate BPSK signaling scheme for the binary data : (5 Marks)
1 1 0 1 0 1

18. Illustrate total internal reflection in optic fiber with Snell’s law. (7 Marks)

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