Placement Papers: Ititiam Question Papers

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  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 + m 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 ans p (1 − p)
  15. no of multi required to mutli 2 upper triangular matrixes program given something like thisunsigned short int i, j = 1; for (i = 0, i < 10, i ++) if (i&j) printf (ITTIAM)
  16. 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