Polaris Placement Paper
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Paper Type : Technical -
Other
The test was for one
hr.-- 40 technical qns
(electrical) for 1/2 hr.
and 30 aptitude qns (1/2
hr.)
there are two sets of qn
papers
Some Tech qns
What is motor is used in
ceiling fan & washing m/cs
In electric traction
wt is 8255
8085 has ___ address and
___ data lines
8051 is a ____ bit
microcontroller (ans:8
bit)
74LS244 is _____
Bucholz relay is used
for _____ protection (trnsfrmr)
Transmission line
parameters are called
____
No. of poles and freq
given find speed
In which motor starting
torque can be incr by
adding rotor resistance
(IM) there were 4 qns
frm Power plants (had to
guess in that) 4 qns frm
Controls (pretty
easy.....like zetaL)
1 means a)underdamped
b)undamped c)overdamped
d)critically damped
qn abt transistor..basic
workin
boolean expn was given
for
simplification-simple
How many flags does 8085
have? (ans-5)
which of the following
are universal gates? (ans-nand,nor)
whts the frequency range
of mobile communication?
The resolution of
picture in tv depends
on..
a. no: of lines scanned
b. video detector o/p
and 2 more choices were
given...
Qn on stability of FET
Wht is the modulation
used to transmit sound
in tv signal
a. VSB
b. FM and 2 more choices
were there...
Wht is double
integration of a unit
step signal?
a. ramp signal
b. parabola
It mainly covers
Operating
system..consists of
questions in semaphore(
2 questions), job
scheduling algorithms
(shortest job),paging (2
or 3 questions),virtual
memory,hashing, etc
virtual memory is used
for............
Rdbms covers "Define
Query"(simple but 4
options made some
complications)
Datastructure : order of
randomly serached binary
tree
Electronics based
questions which covers
microprocessor 80386(not
8085) 2or 3 questions
A pulse is passed
through a pipe..to
detect any damage..this
process is called
..........
a. Time reflectometry
b. Piggy backing
Aptitude
Given a 3x3 matrix, find
the minor of one of the
elements
find the odd one out of
the series 48 47 44 40
32 23 12
A goes to school at 4
kmph and reaches 10 mins
b4 schedule and at 3
kmph reaches 10 mins
after schdule find
thedist (ans 4 km)
Meaning of COY (iritated)
Opposite of Grimace
Opposite of FLOODED WITH
JUMBLED letters find out
the word, the word was
FATIGUE
Simple interest problem
Smallest of four given
fractions
A guy walks @ 4kmph from
a point..After 4hrs a
cyclist starts from the
same point @
10kmph....At wht
distance will they meet
from the starting point?
the qn was almost like
this.
x% of people have tea,
y% have coffee, z no: of
people have both...find
the total no: of
people... soln:
easy..have to use n(AUB)=n(A)+n(B)-n(A
intersctn B)..
Complete the series....
1,4 ,9,25,... (choices-
47,49,64,none)
Analytical qn
"failures are stepping
stones to success" this
means...
a. all success are
preceded by failures
b. success consists of
failures
c. future can lead to
success
d. none..
abt matrices.. which of
the following don't have
inverse? u have to find
for which matrix
|A|=0...time
consuming...
There was 1 big sqr
which had 16 sqrs in
it..4 in a row &
column.. each sqr had a
no: in it.. except one
sqr.. . had 2 find the
missing no:...i dont
remember the nos...
4 sentences given..& 4
choices of word
given...have to choose 1
word that suits all the
4 sentences... *the
police are ___ about the
miising boy in the
forest. * the detective
was ___ her face for
marks. and 2 more
sentences were there...
choices(investigating,
searching....).ans:investigating.
Hcf of 2 nos...1024 &
1214...don remember nos
exactly..like in rs
aggarwal...
out of 500 students,75%
of boys and 72% of girls
passed.Total pass
percentage is 77%.How
much girls ...?
how many prime numbers
are between 1 to 100?
A greater than B and B
less than C. what is the
relation between A and C
?
given a set of different
sentences ...we have to
choose an appropriate
word which should be
matching with all
sentences
eg: A person
--------------the child
The
government---------------the
people options may be
1)saved 2)preserve (this
is not the exact
question)
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123
Eng