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Define Barkhausion Criterion?

The document contains 15 questions related to electronics and microprocessors for a fourth semester exam, covering topics such as depletion regions, JFET vs BJT characteristics, logic gates, flip-flops, 8085 microprocessor architecture, addressing modes, input/output interfacing, and a traffic light controller block diagram with microprocessor. Students are asked to explain concepts, draw diagrams, write programs, derive parameters, and compare different electronic components.

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Jeyakumar Venugopal
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74 views1 page

Define Barkhausion Criterion?

The document contains 15 questions related to electronics and microprocessors for a fourth semester exam, covering topics such as depletion regions, JFET vs BJT characteristics, logic gates, flip-flops, 8085 microprocessor architecture, addressing modes, input/output interfacing, and a traffic light controller block diagram with microprocessor. Students are asked to explain concepts, draw diagrams, write programs, derive parameters, and compare different electronic components.

Uploaded by

Jeyakumar Venugopal
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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RVS EDUCATIONAL TRUST GROUP OF INSTITUTION 12.

a)i)Briefly explain the construction and working principle of

MODEL EXAM Common to Automobile Engineering JFET with its characteristics curve. (12)

SUB CODE/SUB NAME: EC 6464/Electronics and Microprocessors ii) What is the difference between JFET and BJT (4)
SEM/YEAR: IV/II Date: 20.04.17 TIME: 3.00 hrs
(or)
PART-A (10*2=20)
b)i)Explain the construction and working principle of SCR with its
1. What is depletion Region?
Characteristics curve. (8)
2. Differentiate avalanche and Zener breakdown
ii) With circuit diagrams and characteristics explain the working
3. Compare JFET and BJT
of Class A and Class B amplifiers (8)
4. Write the advantages of using transistor?
13.a) (i) Draw and describe logic diagram and truth table of full
5. Define barkhausion criterion?
adder? (10)
6. State Demorgans Theorem
(ii) With truth table explain the functions of logic gates? (6)
7. What do you meant by ALU?
(or)
8. Define microcomputer
b) Define flip-flop and explain the various types of flip-flops(16)
9. What is the need for an interfacing?
14. a)With neat sketch explain 8085 architecture in detail. (16)
10. Write the uses of ALE in 8085?
(or)

PART-B (5*16=80) b) What are the addressing modes of 8085 microprocessor and

11.a)With neat circuit diagram explain center tapped full wave explain them with example programs (16)
rectifier and derive all the parameters . (16)
15.a)Explain in detail about the input and output interfacing
(or) techniques of 8085 microprocessor. (16)

b) i) Explain construction and working principle of PN junction (or)

diode (8) b) Draw and explain the block diagram of traffic light controller with

ii) Explain construction and working principle of Zener diode (8) a microprocessor?

Staff in-charge HOD

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