1
--------S ----R1-------
| R2
V |___
| R3 |( C
| | -----
--------------------------
instantaneous Voltage across R2 when switch S is closed :
a.V*R2/(R1+R2)
b.V*R2/ (R1+R2+R3)
c.0
d.V
Ans V*R2/(R1+R2+R3)------is what I wrote
2
---------R----------
| |
V L
| |
_______________
as freq increases which of the following increases
ans : Z and V(L)
3 q? on setup time and dealy
diagram below given not very clear
clock period is 10ns ,
setuptime of each ff is 2 ns
clk2Q delay is 3ns
Slew dew to inverter is 1ns
Wht is the max allowable dealy of block D hold time=0
Ans 10-2-3-1=4ns
D
Slew=1
CLK=10ns
4 o/p of the following gate
A or nand
B nand C D
and
not
e
ans : (a+b)c+de
5 SER=10^-4 the BER of a QPSK
a =SER
b <=SER
c>=SER
d =SER/2
ans >=SER
6 for 62db of PCM System what is the no of bits =10
7 for a 4 level pipeline processor the no of machine cycles required for executing 4 and
(someno I don't rember) with initially pipeline flushed
ans = 4+3 and …+3
u add there for initial latency
8 An ideal LPF is
a causal
b non causal
c non stable
d none
ans: non causal ,
9 impluse func and white noise have same
a magnitude and phase response
b magnitude response
c phase response
d none
ans magnitude and phase response
10
y(t)=y(t-1)+0.1x(n) is what typr of filter
ans : IIR LPF
11 a signal s(t)=sin(omega*t) is sampled at fs, then the resulting signal spectrum is periodic
depends on:
a Omega/fs
b omega *fs
c omega
d fs
ans omega/fs
12 if 2 gaussian func of mean m1 and m2 are added the wht is the resulting PDF
a guassian func with mean m1+m2
b guassian func with mean m1+m2/2
c uniform with mean m1+m2
d rayelig with mean m1+m2
13 u(t)+ sumof( deltafunc(n-k)){n=- infinitive to+ infinitive ) is equaltent to
I hope I am made this clear it is a simple one
Ans u(-t-1) +2u(t)
14 if the probaba of drawing an even no is p the wht is the probailty of drawing odd no in 2nd
chance given 1st draw resulted in even one
a.p
b.(1-p)
c.p (1-p)
d.p/(1-p)
ans p(1-p)
15 no of multi required to mutli 2 upper triangular matrixes
a p(p+1)/2
b (p-1)(p+1)/2
c.summation (i=1 to p) i(i+1)/2
d…..
ans:c
16 a c program given something like this
unsigned short int i, j=1;
for (i=0,i<10,i++)
if(i&j)
printf("ITTIAM");
how many time is Ittiam printed .
ans 5 since bitwise and therefore only odd no will result in true if condtion
17 some c program abt function concerned with pointer and local variable easy one ans 25
18 f=100 khz fs=125khz
o/p of filter with cutoff 150khzs
ans 25 and 100 khzs
19 stack in a processor is used for
a function call
b unlimted function call
c local variable
d something
I am not very sure if it is function call or unlimited function call , since function call also be
done with shadow registers but only to a certain depth but most processor don't use shadow
registers . at the same time depth of stack is also limited
20 x(F) is a signal whose freq response is asymmetric i.e H(F)=H(-f)
then it can be concluded that x(t) is
a real
b real or complex
c comples
d none
ans complex
here is the apti paper it also has 20 q?s and 30 min
1 some q? on some no is appended with 7(on right of units place) multiplied by 5 then result is
similar to intial no with 7 on the left most (most significant digit)find the 3rd digit
ans =2 (?)
2 OTTSSFF?N
a.T
b.E
c.N
d…
ans: I wrote E
3 abcdefghij
a=no of zeros in the no
b= no of ones in the no
c= no of twos
so on
wht is the sum of digts
a.10
b.55
c.9
d….
ans 9(?)
4 ¼ of a no +2/3 of another no =3/8 of sum
wht is their ratio
ans: 3:7
5,6,7,8 9 four q? on some gre type analytical it was abt some 4 family runs a 4 restaurant name
of husband (jai, jayesh, Parikh,bipin), wife(beena, chand, preethi, sangeetha) and their familyname
(joshi,natwar,sahni,….)give , some hint and who runs which hotel(Indian court, American court,….)
asked
ans D D D C in that order in our paper :ANSWER THIS Q ( I think this was an important question)
10 If in a test 1 mark is for correct answer ,what negative mark should be kept for nullifying
the correct answers…
a.1/4
b.1/2
c.3/4
d…
ans=1/4
11 A wins B by 28 meters or (some) seconds( time) the A is ahead of B
My Quote
