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Ititiam Question Papers

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 dont 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 dont 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 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

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