Electronics And Microprocessors MJ13 4th 080120019

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B.E/B.TECH. DEGREE EXAMINATION, MAY/JUNE 2013
Anna University Question Paper

Forth Semester

Automobile Engineering

080120019-ELECTRONICS AND MICROPROCESSORS

(Regulation 2008/2010)

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PART A-(10*2=20 marks)

1. Distinguish between P-type and N-type semiconductors.
2. Define voltage regulation.
3. In a common-base configuration, current gain of a transistor is 0.965. If the emitter
current Is 10mA, What is the value of base current?
4. Draw the circuit symbol of TRIAC.
5. Why NAND and NOR gates is called as universal gates>
6. Write a short notes on counters.
7. Give the instruction formats for 8085 microprocessor.
8. What are the steps involved in programming?
9. What is meant by I/O data transfer?
10. What is the use of ALE signal?

PART B-(5*16=80 Marks)

11. (a) Explain in detail about Intrinsic and Extrinsic semiconductors with neat diagram.
Or
(b) Explain the construction and VI-characteristics of PN junction diode and Zener diode.
12. (a) Explain various characteristics of BJT in common collector configuration with neat diagram.
Or
(b) Explain the working of SCR with the help of its two transistor equivalent circuits. Draw
its forward and reverse characteristics.
13. (a) Design and implement the half adder and full adder using logic gates.
Or
(b) Explain working principle of D/A and A/D converters.
14. (a) Explain the architecture of 8085 microprocessor with a functional block diagram. Give the
Salient features of 8085 microprocessor.
Or
(b) Write an assembly language program to add and subtract two 16-bit numbers.
15. (a) Explain in detail about the input and output Interfacing techniques of 8085 microprocessor.
Or
(b) Draw and explain in detail about stepper motor interface.