1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

The wavelength of a wave with propagation constant (0.1π+j0.2π)m-1 is

1.  2m/√0.05

2.  10m

3.  20m

4.  30m

View Answer  
4
Correct Answer :

2m/√0.05


Explanation :
No Explanation available for this question

The depth of penetration of wave in a lossy dielectric increases with increasing

1.  conductivity

2.  permeability

3.  wavelength

4.  permittivity

View Answer  
4
Correct Answer :

wavelength


Explanation :
No Explanation available for this question

The current i4, in the circuit of the figure is equal t

1.  12A

2.  -12A

3.  4A

4.  none of these

View Answer  
4
Correct Answer :

-12A


Explanation :
No Explanation available for this question

The vector H in the far field of an antenna satisfies

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

The voltage V in the figure is always equal to

1.  9V

2.  5V

3.  1v

4.  None of these

View Answer  
4
Correct Answer :

None of these


Explanation :
No Explanation available for this question

The  radiation  resistance  of  a  circular  loop  of  one  turn  is  0.01Ω. The  radiation  resistance of five turns of such a loop will be

1.  0.002Ω

2.  0.01Ω

3.  0.05Ω

4.  0.25Ω

View Answer  
4
Correct Answer :

0.25Ω


Explanation :
No Explanation available for this question

An antenna in free space receives 2μW of power when the incident electric field is 20 mV/m rms. The effective aperture of the antenna is

1.  0.005 m2

2.  0.05 m2

3.  1.885 m2

4.  3.77 m2

View Answer  
4
Correct Answer :

3.77 m2


Explanation :
No Explanation available for this question

The function f(t) has the Fourier Transform g(ω). The Fourier Transform

1.  f(ω)/2π

2.  f(-ω)/2π

3.  2π f(-ω)

4.  None of these

View Answer  
4
Correct Answer :

2π f(-ω)


Explanation :
No Explanation available for this question

The maximum usable frequency of an ionospheric layer at 600 incidence and with 8 mHz critical frequency is

1.  16 MHz

2.  16/√3 MHz

3.  8 MHz

4.  about 6.93 MHz

View Answer  
4
Correct Answer :

16/√3 MHz


Explanation :
No Explanation available for this question
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