Yashwantrao Chavan Maharashtra Open University 2006 Certification TML Basic Electronics - Question Paper

TML033/EE/20070817
Basic Electronics
Time : 180 minutes Marks : 100
Instructions for the students :
1. All ques. are compulsory.
2. “Long ans kind ques. (LAQ)” is a supply kind ques. of 20 marks,
which require typical ans of about 60-80 lines in about 32-40 minutes.
3. “Short ans kind ques. (SAQ)” is a supply kind ques. of five marks,
which require typical ans of about 15-20 lines in about 08-10 minutes.
4. Use of non-programmable kind of scientific calculator is allowed.
5. Draw neat diagrams wherever necessary.
6. presume suitable data if necessary.

Long ans kind ques. (LAQ’s)

1. (a) Draw forward and reverse biased characteristics of zener diode
and define its application in respective bias.
(b) discuss in detail – i) Avalanche breakdown ii) Zener breakdown
(c) provide constructional details of NPN transistor and also current
in its symbolic form

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2. (a) With the help of constructional details, discuss the working of
LED. Enlist 2 applications.
(b) Classify rectifier kinds. discuss any 1 rectifier circuit in
detail.
(c) How does zener diode act as shunt regulator ?

3.
(a) Convert (0101)2 and (1111)2 to Hex number.
(b) define the functioning of Hartley oscillator
(c) What is gate ? What is an universal gate ? Which gates are
called as an universal gates ?

4.
(a) Write notes on :
i) J-K flip-flop ii) D flip-flop iii) ring counter
(b) How does digital encoding work ? What is an application of
encoder ?

5. define the active and saturation regions of transistor. 5
6. Compare and comment on frequency response (Bandwidth) of
audio and video amplifiers.

7. What is an application of Karnaugh map ? 5
8. Which are the similarities and differences of microprocessor and
microcontroller ?

Earning:   Approval pending.