The signal x(t) is described by Two of the angular frequencies at which its Fourier transform becomes zero are

1.  π , 2 π

2.  0.5π, 1.5π

3.  0, π

4.  2π, 2.5π

View Answer  
4
Correct Answer :

π , 2 π


Explanation :
No Explanation available for this question

The ratio of the mobility to the  diffusion coefficient in a semiconductor has the units

1.  V -1

2.  em. V -1

3.  V.cm -1

4.  V.s

View Answer  
4
Correct Answer :

V -1


Explanation :
No Explanation available for this question

A discrete time linear shift-invariant system has an impulse response h[n] with h[0] = 1, h[1]= -1, h[2] = 2, and zero otherwise. The system  is given an  input sequence x[n] with x[0] =x[2] = 1, and zero otherwise. The number of nonzero samples in the output sequence y[n],and the value of y[2] are respectively

1.  5, 2

2.  6, 2

3.  6,1

4.  5,3

View Answer  
4
Correct Answer :

5,3


Explanation :
No Explanation available for this question

Consider points P and Q in the x-plane, with P = (1, 0) and Q = (0, 1). The line integral 2 long the semicircle with the line segment PQ as its diameter

1.  is -1

2.  is 0

3.  is 1

4.  depends on the direction (clockwise or anti-clockwise) of the semicircle

View Answer  
4
Correct Answer :

is 0


Explanation :
No Explanation available for this question

In a microprocessor the service   routine for a certain interrupt starts from a fixed location of memory which cannot be externally set,but the interrupt can be delayed or rejected such an interrupt is 

1.  non-maskable and non-vectored

2.  maskable and non-vectored

3.  non-maskable and vectored

4.  maskable and vectored

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4
Correct Answer :

maskable and vectored


Explanation :
No Explanation available for this question

If the transfer function of the following network is (V0(s))/(Vi(s))=1/(2+CR). The value of the load resistence RL is

1.  R/4

2.  R/2

3.  R

4.  2R

View Answer  
4
Correct Answer :

R


Explanation :
No Explanation available for this question

Consider  the  system  (dx/dt)  = Ax  + Bu with  and  where  p  and  q  are arbitrary  real  numbers. Which  of  the  following  statements  about  the  controllability  of  the system is true

1.  The system is completely state controllable for any nonzero values of p and q

2.  Only p = 0 and q = 0 result in controllability

3.  The system is uncontrollable for all values of p and q

4.  We cannot conclude about controllability from the given data

View Answer  
4
Correct Answer :

The system is uncontrollable for all values of p and q


Explanation :
No Explanation available for this question

Let x(t) be the input and y(t) be the output of a continuous time system. Match the system properties P1, P2 and P3 with system relations R1, R2, R3, R4   Properties   Relations P1 linear but NOT in time-varient R1 y(t)=t2X(t) P2 Time varient BUT not linear R2 y(t)=t|x(t)| P3 linear and time invarient R3 y(t)=|x(t)|       y(t)=x(t-5)  

1.  (P1, R1), (P2, R3), (P3, R4)

2.  (P1, R2), (P2, R3), (P3, R4)

3.  (P1, R3), (P2, R1), (P3, R2)

4.  (P1, R1), (P2, R2), (P3, R3)

View Answer  
4
Correct Answer :

(P1, R1), (P2, R3), (P3, R4)


Explanation :
No Explanation available for this question

For  a  message  signal  m  (t)  =  cos π (27 f mt)  and  carrier  of  frequency  fc,  which  of  the following represents a single side band (SSB) signal

1.  cos (2πfmt) cos (2πfct)

2.  cos (2πfct)

3.  cos [2π(fc + tm)t]

4.  [1 + cos(2πfmt)] cos (2πfct)

View Answer  
4
Correct Answer :

cos [2π(fc + tm)t]


Explanation :
No Explanation available for this question

A memoryless source emits n symboly each with a probability p. The entropy of the source as a function of n

1.  increases as log n

2.  decreases as log (1/n)

3.  increases as n

4.  increases as n log n

View Answer  
4
Correct Answer :

increases as log n


Explanation :
No Explanation available for this question
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