Which of the following transfer function is that of a Band pass filter

1.  1/S2+S+1

2.  S2/S2+S+1

3.  S/S2+S+1

4.  S2-S+1/S2+S+1

4

S/S2+S+1

Explanation :
No Explanation available for this question

The fourier transform of the function sgn(t) defined in the figure is

1.  1/ jω

2.  -1/ jω

3.  2/jω

4.   -2/jω

4

2/jω

Explanation :
No Explanation available for this question

Which one of the following is the fourier transform of the signal given in figure (b),if the fourier transform of the signal in figure (a) is given by 2SinwT

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

The two inputs to an analog multiplier are x(t) and y(t) with fourier transforms X(f) and Y(t) respectively. The output z(t) will have a transform Z(f) given by

1.  X(f).Y(f)

2.  X(F)+Y(f)

3.

4.

4

Explanation :
No Explanation available for this question

Thefourier transform of a Gaussian time pulse is

1.  uniform

2.  a pair of impulse

3.  Gaussian

4.  Rayleigh

4

Gaussian

Explanation :
No Explanation available for this question

The response of a system is h(t) when the input is x(t) The output y(t) will be [H(f) is the courier transform of h(t)]

1.  h(t)x(t)

2.  [h(t)]x(t)

3.  h(t)x(t)

4.   h(t)

4

h(t)x(t)

Explanation :
No Explanation available for this question

The fourier transform of v(t)=cos ω0t is given by

1.  v(t)=δ(f-f0)/2

2.  v(t)= δ(f+f0)/2

3.  v(t)= [δ(f-f0)+δ(f+f0)]/2

4.   v(t)= [δ(f-f0)-δ(f+f0)]2

4

v(t)= [δ(f-f0)+δ(f+f0)]/2

Explanation :
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If F(f) be the fourier transform of a function f(t),then F(0) is

1.

2.

3.

4.

5.  Alice

6.  Bert

7.  Cheryl

8.  David

9.  Enid

9

Cheryl

Explanation :
No Explanation available for this question

Transform and ROC of unit sample sequence If x(n) = δ (n),are

1.  X(z) = 1, ROCz =0

2.  X(z) = 1, all values of z

3.  X(z) = 1,all values of z except z=0

4.  X(z) = 1,all values of z except z=0 and z = ∞

4

X(z) = 1, all values of z

Explanation :
No Explanation available for this question

Transform and ROC of unit sample sequence If x(n) = δ(n-k) are

1.  X(z) = zk, all values of z except z=0

2.  X(z) = z-k, all values of z except z=0

3.  X(z) = z-k, all values of z except z=∞

4.  X(z) = zk, all values of z except z=∞

4