Download AKTU B-Tech 2nd Sem 2014-15 EC 201 Electronics Engineering Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU)) B-Tech 2nd Semester (Second Semester) 2014-15 EC 201 Electronics Engineering Question Paper

Printed Pages : 4
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(Following Paper'ID and Roll No. to be ?lled in your Answer Book)
PAPER ID : 199214
Roll No.
_ B. Tech.
(SEM. II) THEORY EXAMINATION, 2014-15
ELECTRONICS ENGINEERING
Time : 3 Hours] [Total Marks : 100
. Note : (1) Attempt all questions.
(2) All questions .,carry equal marks.
1' Attempt any four parts of the following: 5X4=20
(a) With the help of the circuit diagram explain the
working of voltage doubler circuit.
(b) ? For the network of Flg 1, determine the range of V
that will maintain VL at 8 V and not exceed the
maximum power rating of the Zener diode.
Fig.1
. 199214] 1 [Contd...
.......

(c) Determine V0 for the given network showh in Fig.2
v 8| '
"W "' ?-.-H--.-:|||
I
. :10 v
1 Fig.2
((1) Write short notes on Tunnel Diode with necessary
(e) Find out the ripple factor and ef?ciency of full wave
Bridge recti?er.
(1) Sketch V0 for the given network shown in Fig. 3 for
the input shown.
C
1"r 3.
Si
+ ' R "O
l- -'.' 20 V -
.f ?3
m A , ,
2 Attempt any four parts of the following: 5X4=20
(a) Draw the input and output characteristiCS of CB
npn transistor con?guratibn with proper labels.
. (b) Fer the cOmmon emitter ampli?er con?guration
using Hybrid equivalent model, determine
Z1 ? Zo ? Av .
(c) Derive the stability factor S (B) for the emitter bias
con?guration.
(d) Findout IC,I?E,VCEOfthe?g4.
(e) Explain with necessary diagram how BJT works as?
' switch
(i) What is a well-designed voltage divider biasing
199214]
circuit? Explain.
2 [ Contd...
3 Attempt any four parts of the following. 5X4=20
(a) De?ne Op-Amp with the help of block diagram. Also
describe the ideal characteristics of 10-741.
(b) ExDlain :
(i) Di?'erentiator circuit using Op-Amp.
(ii) Unity gain ampli?er using Op-Amp.
(c) For the network of Fig. 5, VD=9 V. Determine 113, V05. Pips, V p
(d) Explain the construction and working of n channel
enhancement type MOSFET.
(e) Explain how FET used as Voltage Variable Resistance?
(3 Find out the output voltages of the Fig.6.
B55
199214]
. 200K
20K ' '
Ema _ v2
~T-O 5.?
y. 1,. ?.5
v1 no.2?! V Vs
Mud .
10K 200K
Fig.6
C
3 [ Contd...

4 Attempt any two parts of the following: 10x2=20
(a) Explain the basic principle of digitalvoltmeter with
the help of block diagram.
(b) Explain how frequency and phase can be measured
using CRO.
(0) Draw a neat block diagram of a cathode ray
oscilloscope with proper labels. Also explain 'its
working principle.
5 Attempt any two parts of the following: 10x2=20
(a) Simplify the following expression using K-map and
implement the output using universal logic gates.
F(AEC,D)=2M(L 3, e 6, a9,13,15)+2d(0,z14)
(b) Simplify the following expression using Boolean algebra
(1)4 F=AB+A(B+C)+B(B+C)
(ii) F=AEED+Z?D+BCB+ZB+BE
(c) (1) Add and Subtract withOut converting their base of
the following two Hexadecimal numbers, A4FB and
3FDC.
(ii) What are universal gates? Implement two inputs
XOR gate using only 4 NAND Gates.
(in) ConverttheBinarynumber(101011001110011) to'
a Gray number. Also convert Gray num er
(111001100011)Gmy to Binary number.
199214] 4 [7200]