Yashwantrao Chavan Maharashtra Open University 2006 Certification TES Electronic Components and Materials - exam paper

TES023/EE/20070816
Electronic Components and Materials
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) elaborate the various methods of producing electricity ?
discuss in detail.
(b) Resistor has five bands, 1st band is brown, 2nd bandblack,
third band-black, 4th band-brown, 5th bandbrown.
compute the value of resistor.
(c) What is pot ? Draw symbol for it.

2. (a) What is electroplating ? Which factors effect the
electroplating of metals ?
(b) Write short notes on :
i) Lithium cells
ii) Button cells


3. (a) What is Meggar ? Where it is used ?
(b) Which factors decide resistance of wire ?
(c) discuss the operating principle of speaker.


4
(a) 4 capacitors having values of 20uf, 50µ f, 40µ f and
60µ f are connected in i) series ii) paraller. What is the
total capacitance of this circuit ?
(b) What is Relay ? elaborate the various kinds of relays ?
discuss operation of any one.

Short ans kind ques. (SAQ’s)

5. A 10 k resistor has a tolerance of 5%. elaborate the minimum
and maximum ratings of this resistor ?

6. What is Cuprous Cyanid ? 5
7. What is duet banks ? How to use it ? 5
8. What would be the plate area of a 1-Farad capacitor if air is used
as the dielectric and the plates are separated by a distance of 1
in ? provide ans in sq. inch and sq. miles.

Earning:   Approval pending.