The  DTL,  TTL,  ECL  and  CMOS  families  of  digital  ICs  are  compared  in  the  following  4Columns   (P) (Q) (R) (S) Fanout is minimum DTL DTL TTL CMOS Power consumption is minimum TTL CMOS ECL DTL Propagation delay is minimum CMOS ECL TTL TTL The correct column is

1.  P

2.  Q

3.   R

4.  S

View Answer  
4
Correct Answer :

R


Explanation :
No Explanation available for this question

The circuit shown in the figure is a 4 bit DAC The  input bits 0 and 1 are  represented by 0 and 5 V  respectively. The OP AMP  is  ideal,but  all  the  resistances  and  the  5V  inputs  have  a  tolerance  of  ±10%.  The  specification (rounded to the nearest multiple of 5%) for the tolerance of the DAC is

1.  ± 35%

2.  ± 20%

3.  ± 10%

4.  ± 5%

View Answer  
4
Correct Answer :

± 35\%


Explanation :
No Explanation available for this question

The circuit shown in the figure converts

1.  BCD to binary code

2.  Binary to excess - 3 code

3.  Excess - 3 to Gray code

4.  Gray to Binary code

View Answer  
4
Correct Answer :

Gray to Binary code


Explanation :
No Explanation available for this question

In the circuit shown in the Figure A is a parallel-in, parallel-out 4 bit register, which loads at the rising edge of  the clock C. The  input  lines are connected  to a 4 bit bus, W.  Its output acts as the input to a 16 x 4 ROM whose output is floating when the enable input E is 0. A partial table of the contents of the ROM is as follows Address 0 2 4 6 8 10 11 14 Date 0011 1111 0100 1010 1011 1000 0010 1000 The clock to the register is shown, and the data on the W bus at time t1 is 0110. The data on the bus at time t2 is

1.   1111

2.  1011

3.  1000

4.  0010

View Answer  
4
Correct Answer :

1000


Explanation :
No Explanation available for this question

In an 8085 microprocessor, the instruction CMP B has been executed while the content of the accumulator is less than that of register B. As a result

1.  Carry flag will be set but Zero flag will be reset

2.  Carry flag will be reset but Zero flag will be set

3.  Both Carry flag and Zero flag will be reset

4.  Both Carry flag and Zero flag will be set

View Answer  
4
Correct Answer :

Carry flag will be set but Zero flag will be reset


Explanation :
No Explanation available for this question

Let X and Y be  two statistically  independent random variables uniformly distributed  in  the ranges (-1, 1) and (-2, 1) respectively. Let Z = X + Y. Then the probability that [Z ≤ - 2] is

1.  zero

2.  1/6

3.  1/3

4.  1/12

View Answer  
4
Correct Answer :

zero


Explanation :
No Explanation available for this question

Let  Y  and  Z  be  the  random  variables  obtained  by  sampling  X(t)  at  t  =  2  and  t  =  4 respectively. Let W = Y - Z. The variance of W is

1.  13.36

2.  9.36

3.  2.64

4.  8.00

View Answer  
4
Correct Answer :

2.64


Explanation :
No Explanation available for this question

Let H(f) denote  the  frequency  response of  the RC-LPF. Let  f1 be  the highest  frequency such that 0 ≤ | f | ≤ f1, ((|H(f1)|)/H(0)) ≤ 0.95. Then f1 (in Hz) is

1.  327.8

2.  163.9

3.  52.2

4.  104.4

View Answer  
4
Correct Answer :

52.2


Explanation :
No Explanation available for this question

Let  tg(f) be  the group delay  function of  the given RC-LPF and  f2 = 100 Hz. Then  tg(f2)  in ms, is

1.  0.717

2.  7.17

3.  71.7

4.  4.505

View Answer  
4
Correct Answer :

7.17


Explanation :
No Explanation available for this question

Let x(t) = 2 cos(800  πt) + cos(1400  πt). x(t)  is sampled with  the  rectangular pulse  train shown in the figure. The only spectral components (in kHz) present in the sampled signal in the frequency range 2.5 kHz to 3.5 kHz are

1.  2.7, 3.4l

2.  3.3, 3.6

3.  2.6, 2.7, 3.3, 3.4, 3.6

4.  2.7, 3.3

View Answer  
4
Correct Answer :

2.7, 3.4l


Explanation :
No Explanation available for this question
Previous Next

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python