The contents of stack location 2109H after the call operation in the given figure will be

1.  00001111

2.  01010101

3.  00100000

4.  00100010

View Answer  
4
Correct Answer :

00100000


Explanation :
No Explanation available for this question

Which line goes low if input to the 3 to 8 decoder (74 LS 138) (A7 – A0) = (110-1111)

1.  1

2.  3

3.  5

4.  6

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

What is the memory map shown in the figure

1.  0FC00H-0FFFH

2.  0FC0IH-0FFFFH

3.  0FC18H-0FFFFH

4.  0FC19H-0FFFFH

View Answer  
4
Correct Answer :

0FC00H-0FFFH


Explanation :
No Explanation available for this question

The output data lines of microprocessors and memories are usually tristated because

1.  More than one device can transmit information over the data at the same time

2.  More than one device can transmit information over the data bus at the same time

3.  Data lines can be multiplexed for both input and output

4.  It increases speed of data transfers over the data bus

View Answer  
4
Correct Answer :

More than one device can transmit information over the data at the same time


Explanation :
No Explanation available for this question

The voltage across an impedance in a network is V(s)=Z(s) I(s), where V(s), Z(s) and I(s) are the Laplace Transforms of the corresponding time functions v(t), z(t) and i(t). The voltage v(t) is

1.  v(t)=z(t). i(t)

2.  

3.  

4.   v(t)=z(t)+i(t)

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

If input X3, X2, X1, X0 to the ROM in the figures are 8-4-2-1 BCD numbers then output Y3, Y2, Y1, Y0 are

1.  Gray co0de number

2.  2-4-2-1 BCD number

3.  Excess 3-code convertor

4.  None of these

View Answer  
4
Correct Answer :

2-4-2-1 BCD number


Explanation :
No Explanation available for this question

The impulse response functions of four linear system S1, S2, S3, S4 are given respectively by h1(t)=1; h2(t)=U(t); h3(t)=U(t)/t+1; h4(t)=e-3tU(t), Where U(t) is the unit step function. Which of these systems is time invariant, causal, and  stable

1.   S1

2.  S2

3.  S3

4.  S4

View Answer  
4
Correct Answer :

S4


Explanation :
No Explanation available for this question

A continuous time LTI system is described by d2y(t)/dt2+4 dy(t)/dt+3y(t)=2dx(t)/dt+4x9t).Assuming zero initial conditions, the response y(t) of the above system for the input x(t)=e-2tu(t) is given by

1.   (et-e-2t)u(t)

2.  (e-t-e-3t)u(t)

3.   (e-t+e-3t)u(t)

4.  (et+e3t)u(t)

View Answer  
4
Correct Answer :

(e-t-e-3t)u(t)


Explanation :
No Explanation available for this question

An input x(t)=exp(-2t)u(t)+δ(t-6) is applied to an LTI system with impulse response h(t)=u(t). The output is

1.   [1-exp(-2t)]u(t)+u(t+6)

2.  [1-exp(-2t)]u(t)+u(t-6)

3.   0.5[1-exp(-2t)]u(t)+u(t+6)

4.   0.5[1-exp(-2t)]u(t)+u(t-6)

View Answer  
4
Correct Answer :

0.5[1-exp(-2t)]u(t)+u(t-6)


Explanation :
No Explanation available for this question

In the circuit the output will be

1.  Sine wave

2.  Square wave pulse

3.  Linear

4.  Nom-Linear

View Answer  
4
Correct Answer :

Square wave pulse


Explanation :
No Explanation available for this question
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