Scheme - G
Sample Test Paper-I
Course Name : Electronics Engineering Group
Course Code : DE/ED/EI/EJ/EN/ET/EV/EX/IC/IE/IS/IU/MU
Semester
: Second
Subject Title : Elements of Electronics
Marks
: 25
17215
Time:1 Hrs.
Instructions:
1. All questions are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Figures to the right indicate full marks.
4. Assume suitable data if necessary.
5. Preferably, write the answers in sequential order.
Q.1 Attempt any THREE
09 Marks
a) Write the formula for capacitive reactance. State the effect of frequency on the capacitive reactance.
b) Draw the circuit diagram of half wave rectifier. Describe the operation with input and output wave
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form.
c) Draw the symbol and list the applications of PIN diode and Schottky diode.
d) List specifications and applications of linear and non linear potentiometers
Q.2 Attempt any TWO
08 Marks
a) Compare air core and ferrite core inductor on the basis of constructional diagram and applications.
b) Draw the constructional details of LED. Describe the operating principle.
c) Draw the symbol of PN junction diode .Describe its working principle and list twoapplications of the
same.
Q3.Attempt any TWO
08 Marks
a) Compare LDR and TDR on the basis of working principle, material used for construction,
characteristics curves and applications.
b) Draw the characteristics of Zener diode. List four applications of zener diode
c) Compare center tapped rectifier with bridge rectifier on the basis of following parameter
i) Number of diode used ii) PIV iii) TUF iv) Efficiency
Scheme - G
Sample Test Paper-II
Course Name : Electronics Engineering Group
Course Code : DE/ED/EI/EJ/EN/ET/EV/EX/IC/IE/IS/IU/MU
Semester
: Second
Subject Title : Elements of Electronics
Marks
: 25
17215
Time :1 Hrs.
Instructions:
1. All questions are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Figures to the right indicate full marks.
4. Assume suitable data if necessary.
5. Preferably, write the answers in sequential order.
Q.1 Attempt any THREE
09 Marks
a) Draw the circuit diagram of RC integrator. Sketch the output wave form for square wave input.
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Describe the operation of the circuit.
b) State the Kirchoff’s Current Law(KCL) with suitable example
c) Compare linear and nonlinear wave shaping circuits
d) Draw the circuit diagram of half wave rectifier with shunt capacitor filter. Describe the operation of
circuit with input output wave forms.
Q.2 Attempt any TWO
08 Marks
a) Draw the circuit diagram of bridge rectifier with series inductor filter. Describe the operation of
circuit with input output wave forms.
b) Draw the circuit diagram of positive clamper using diode. Describe the operation of circuit with
input output waveforms.
c) Three resistances each of 12Ω are connected in star. Convert it into equivalent delta connection
Q.3 Attempt any TWO
08 Marks
a) Draw the circuit diagram of positive clipper .Describe the operation circuit with input
output wave forms.
b) By using Maxwell’s loop current method calculate current in 3Ω resistance for the network
shown in figure 1
Figure 1
hevenin’s eqquivalent ciircuit for thee network shown in figgure 2
c) Obbtain the Th
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Figure 2
Scheme - G
Samplee Question
n Paper
Course Naame : Electtronics Enggineering Group
G
Course Coode : DE/E
ED/EI/EJ/E
EN/ET/EV//EX/IC/IE/IIS/IU/MU
Semester
: Secon
nd
Subject Tiitle : Elem
ments of Eleectronics
Marks
: 100
172
215
Time: 3 Hrs.
Instructioons:
1. All questions arre compulsoory.
2. Illusstrate your answers
a
witth neat sketcches wherevver necessaary.
3. Figuures to the right
r
indicatte full markks.
4. Assuume suitablle data if neecessary.
5. Prefferably, writte the answers in sequeential order..
Q.1 Attem
mpt any TE
EN
20 Maarks
a) S
State the Farraday’s laws of electrom
magnetic innduction. Allso write itss formula.
b) D
Draw the neat labeled sketch of slu
ug tuned indductor. Statee two functiions of it.
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c) D
Define the teerm “Effecttive Series Resistance”
R
with refereence to capaacitor.
d) D
Draw the cirrcuit diagram
m of bridgee rectifier annd label it.
e) D
Draw the cirrcuit diagram
m of center tapped recttifier with π filter and label
l
it.
f) D
Draw the ideeal current source
s
and practical
p
cuurrent sourcee.
g) S
State the Kirrchoff’s Voltage Law along
a
with its formula.
h) C
Calculate thee supply vooltage of thee circuit shown in figure 1
i) W
Write the fouur applications of zeneer diode.
j) E
Explain withh neat sketchh constructiion of PIN diode.
d
k) S
State the coondition for integratioon with refference to RC integraator with neat
n
circuitt
ddiagram.
l) D
Draw the circuit diiagram of shunt neegative cliipper withh input and
a
outputt
w
waveform.
mpt any FO
OUR
Q.2 Attem
16 Maarks
a) Describe
D
thee working of
o LDR withh neat sketcch. State theeir four appllications.
b) Draw
D
the characterisstics of Linear
L
and Logarithm
mic potentiiometers. W
Write fourr
s
specification
ns of Potenttiometers.
c) Draw
D
the coonstructionaal diagram of
o Electrolytic Capacitoor. Explain the workingg
d) List
L the twoo specificatioons of capaacitors and tw
wo dielectric materialss used in cappacitors.
e) Draw
D
the coonstructionaal diagram iron core indductor and ferrite
f
core inductor.
f) Describe
D
thhe working of PN junnction diodde with neeat sketch under
u
forw
ward biasedd
c
condition.
Q.3 Attem
mpt any FO
OUR
16 Maarks
a) Enlist
E
four specification
s
ns of zener diode.
b) Describe
D
co
onstruction of
o tunnel dioode with neeat sketch. List
L two appplications.
c) Describe
D
thee operating principle off Laser diodde with neatt sketch.
d) Draw
D
the symbol
s
of Schottky diode.
d
Withh neat sketcch explain working principle
p
off
S
Schottky
dio
ode.
e) List
L differennt types of filters. Which filter is practicallyy preferred to
t get pure DC outputt
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v
voltage?
Wh
hy?
f) State
S
the vallues of folloowing param
meters withh reference to
t half wavee rectifier
i Ripple Faactor ii) Effiiciency iii) TUF
i)
T
iv) Avverage valuee of DC outp
tput voltage
16 Maarks
mpt any FO
OUR
Q4. Attem
a) D
Draw the ciircuit diagraam of full wave
w
bridgee rectifier with
w LC filtter. Explainn with inputt
aand output wave
w
form.
b) U
Using colouur code ,wriite the colou
ur codes forr following resistors
ii)
560K
K ± 5%
ii)23
3.4K ± 10%
%
c) D
Draw the circuit diagrram of seriees inductor filter with half wave rectifier.
r
Exxplain withh
iinput and ouutput wave forms.
d) IIn FWR VM= 10V, RL = 10 KΩ. Calculate VDC, IDC and
a ripple factor.
fa
Referr followingg
F
Figure 2s
Figuree No. 2
e) C
Compare PN
N-junction diode &Zenner diode. (F
Four points)
a) C
Compare LE
ED and Phooto diode..(F
Four points)
Q.5 Attem
mpt any FO
OUR
16 Maarks
a) What do you
y mean by
b the term
m wave shaaping circuit? Explainn why it is needed inn
practical appplications??
b) Describe th
he working principle off RC differeentiator witth neat sketcch. State the conditionn
for differenntiator.
c) Describe thhe working of Positive shunt clipper with neat circuit diaagram and innput/outputt
wave formss.
d) Draw the circuit
c
diagrram of RC integrator.
i
D
Draw the in
nput and outtput wavefoorms of RC
integrator for
f square wave
w
and triangular as input.
i
e) State the su
uperpositionn theorem with
w suitablee example.
f) State the Thhevenin’s thheorem withh suitable example.
Q.6 Attem
mpt any FO
OUR
16 Maarks
a) Draw circuuit diagramss for negativ
ve and posiitive voltagee clamping circuits.
Show the input
i
and ouutput wavefform.
b) Compare clipper
c
and clamper. (F
Four points)
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c) Explain the followingg terms
i) Active Network
N
ii) Linear Network
iii) Bilateral Network
iv) Unilaterral Networkk
d) Calculate the value of currentt in 5Ω reesistance using
u
Nortoon’s theoreem for the
network shhown in figuure no.3
Figuree No. 3
e) Calculate the
t value off RL, so thaat power trannsferred is maximum in
i the circuit shown inn
figure no. 4
Fiigure No. 4
f) Write the m
meaning terrm open circcuit and shoort circuit with neat diaagram.
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