BEL Placement Papers
BEL PAPER ON 19th SEPTEMBER 2008
Hello friends, i'm Vikash Kimothi from College of
Technology, PANTNAGAR, BEL visited my college on 19th-20th
sept'08 for recruitment. Their selection procedure consist
of 2 stages ----- written(technical) and interview. THey
have differnt written paper for electronics, computer &
mechanical engg cadidates.I'm from ECE and the wriitten test
consists of general questions most of them from
communication & digital logic families. The cut-off for the
written examination was 30%. After clearing the written i
face the interview. Interview panel comprise of 5 members
from electronics, computer, mechanical & HRD field. MOst of
the question asked in the interview were simple like some
electronics principles and their applications.
They ask mainly questions from communication--analog &
digital and also ask for the principle/working of some
equipment like CFL, electronic fan regulators, DTH
service/satellite tv, mobile phone, IP tv etc...
Here i have given some of the questions of the written
paper(ECE)... The paper consist of two sections ----40
objective & 10 true false questions. The cut-off as told by
them 30% but they may have increase this limit. in my
college only 8 out of 21 cleared the paper(for ECE branch)
Part I---Objective questions (40 with 1.5 marks each) with
50% -ve marking
1. Numerical problem based on modulation index fc,
fm.......... (formula based direct queston).
2.Poles & zeroes are at .01,1,20,100...... find phase
margin/angle at f=50Hz. ans -90(By drawing bode plot)
3.In n-type enhancement mode MOSFET drain current-----------
options are- increase/decrease with inc/dec in drain/gate
4. Gain of an directional antenna 6db P=1mw find transmitted
power.........(use Ptr= G * P.)
5.Multiplication of two nos 10101010 & 10010011 in 2's
6.A ckt is given suppplied with 15v with a series of
resistance of 1k and a parallel combination of 12V zener
diode and 2k resistance. FInd current through 2k resistance.
7.A MP has 16 line data bus & 12 line addr bus find memory
8.Divide by 12 counter require minimum ..... no of flip
flops Ans. 4
9.Storage time in p-n junction.
10.Succesive approx. use in .... Ans ADC(analog to digital)
11.Pre-emphasis require in ......... low freq/high freq
12.Handshake in MP ........... Ans to communicate with
13. Binary equivalent of 0.0625 Ans. 0.0001
14.Which code is self complement of itself
15.Excess three code of an given binary no.
16.When we add 6 in BCD operations....... Ans. if result
exceed valid BCD nos.
17.Shottky diode has better switching capability because it
18.Figure of Merit is same as......
19.Swithcing in diode happens when....
20.During forward bias majority charge conc. in depletion
21.Channel capacity depend on....... Ans. Usable frequency
22.A 2kHz signal is passed through an Low pass filter having
cut-off freq 800Hz o/p will be
23. Carrier amplitude 1v, peak to peak message signal 3mv
find modulation index.
24.A 12V signal is quantized into two V/14 & 6 equal V/7
determine quantization error.
Part II True & false......(10 1 mark each) with 50% -ve
1.Power dissipation in ECL is minimum.......... False
2.Fourier Transform of a symmetric conjugate function is
always real .... True
3.Divide by 12 counter requires a minimum of 4 flip
4.Boron can be use as impurity to analyse base of a npn
ALL THE BEST.....