A single x(t) has a Fourier transform X(ω).If x(t) is a real and odd function of t,then X(ω) is

1.  A real and even function of ω

2.  a imaginary and odd function of ω

3.  an imaginary and even function of ω

4.  A real and odd function of ω

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4
Correct Answer :

A real and even function of ω


Explanation :
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Assuming perfect conductors of a transmission line,pure TEM propagation is NOT possible in

1.   coaxial cable

2.  air-filled cylindrical wave guide

3.  parallel twin-wire line in air

4.  semi-infinite parallel plate wave guide

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4
Correct Answer :

semi-infinite parallel plate wave guide


Explanation :
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Indicate which one of the following will NOT exist in a rectangular cavity

1.     TE110

2.  TE011

3.  TM110

4.  TM111

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4
Correct Answer :

 

TE110


Explanation :
No Explanation available for this question

Identify which one of the following will NOT satisfy the wave equation.

1.   50ef(ωt-3z)

2.  sin[ω(10z+5t)]

3.  cos(y2+5t)

4.  sin(x) cos(t)

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4
Correct Answer :

cos(y2+5t)


Explanation :
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The fourier series representation of an impules train denoted by

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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For a binary half-subtractor having two inputs A and B,the correct set of logical expression for the outputs D(=A minusB) and X(=borrow) are

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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For the system described by the state equation If the control signal u is given by u=[-0.5,-3,-5] x+u,then the eigenvalues of the closed-loop syatem will be

1.   0,-1,-2

2.  0,-1,-3

3.  -1,-1,-2

4.  0,-1,-1

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4
Correct Answer :

0,-1,-1


Explanation :
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The z-trasition of a signal is given by C(z)=1z-1(1-z-1)/4((1-z-1)2   Its final value is

1.  ¼

2.  zero

3.  1.0

4.   infinity

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4
Correct Answer :

zero


Explanation :
No Explanation available for this question

The Nyquist sampling frequency(in Hz) of a signal given by 6x104 sin      e2(400t)*sine3(100t) is

1.   200

2.  300

3.  500

4.  1000

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4
Correct Answer :

1000


Explanation :
No Explanation available for this question
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