S.B. Roll NO……….
BASIC
ELECTRONICS
2nd
Exam/COMP/61260664/Dec 2011
Time: 3 Hrs. Max.
Marks: 75
SECTION-A
Q1. Attempt any ten Parts.
(a) In
N-type semiconductor……….. are the minority carries.7.
(b) Semiconductor
have ………. Bond.
(c) The
merging of free election & Hole is called ………….
(d) A
Crystal diode act as a/an …………. Switch.
(e) An
Ideal crystal diode has ………… forward Resistance.
(f) The
value of Knee voltage for Silicon diode is ……….
(g)
In transistor, base is Very………………
(h) Filter
circuits are used to reduce………….
(i) Give
full form of MOSFET.
(j) The
function of transistor is to ………….
(k) The
efficiency of Half Wave Rectifier is………….
(l) PIV
stands for …………………
SECTION-B
Q2.
Attempt any five questions.
1. Draw
the atomic structure of Germanium. What do you mean by Minority carriers,
majority carrier & Doping.
2. What
do you mean by Diode? Explain Forward Biasing of Diode.
3. Explain
shunt capacitor Filter.
4. How
BJT is differ from JFET.
5. Explain
the phase reversal of Output voltage with respect to input voltage.
6. Explain
Zener Break down & Avalanche Breakdown.
7. Derive
the relation between a and a, and a and a.
8. List
different types of Diode. Explain Schottky Diode.
SECTION-C
Q3. Attempt any three questions.
1. What
do you mean by Rectifier? Explain Diode as a Full Wave Rectifier.
2. What
is Transistor? What are the functions of Emitter, Base & Collector? Explain
the working of PNP transistor.
3. Explain
the construction, operation & characteristics of MOSEFET in depletion mode.
4. What
are the different types of Biasing Ckt. Explain potential Divider Biasing in
detail ?
5. What
are the use of AC load Line in calculation of Current & voltage Gain of
single stage amplifier circuit.
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