Which one following statements DOES NOT pertain to the equation .B=0

1.  There are no sinks and sources for magnetic fields

2.  Magnetic field is perpendicular to the electric field

3.  Single magnetic pole cannot exist

4.  B is solenoida

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4
Correct Answer :

Magnetic field is perpendicular to the electric field


Explanation :
No Explanation available for this question

The equation of a plane wave may be written as (with usual symbols)

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

Which one of the following sets of equations is independence in Maxwell’s equations

1.  The two curl equations

2.  The two divergence equations

3.  Both the curl and divergences auditions

4.  The two equations combined with the continuity equation

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4
Correct Answer :

Both the curl and divergences auditions


Explanation :
No Explanation available for this question

Which of the following equations represents the Gauss’ law in a homogeneous isotropic medium

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

Given that E = time and space dependent electric intensity vector ????= permeability of the medium σ= conductivity of the medium = permittivity of the medium, the electromagnetic wave equation is given by

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

Transmission line whose characteristic impedance is a pure resistance

1.  Must be a lossless line.

2.   Must be a distorionless line

3.  May not be a lossless line

4.  May not be a distortionless line

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4
Correct Answer :

May not be a lossless line


Explanation :
No Explanation available for this question

A transmission line of characteristic impedance Z0 = 50 ohms, phase velocity VP = 2 x 108 m/s, and length l =1 m is terminated by a load Z1 (30-j40) ohms. The input impedance of the line for a frequency of 100 MHz will be

1.  (30+j 40) ohms

2.   (30 –j 40) ohms

3.   (50+j40) ohms

4.  (50-j40) ohms

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4
Correct Answer :

(30 –j 40) ohms


Explanation :
No Explanation available for this question

A material is described by the following electrical parameters as a frequency of 10 GHz, σ = 106 mho/m, μ= μ0 and σ/σ0 = 10. The material at this frequency is considered to be (σ = 1/36 π x 10-9 F/m)

1.  Good conductor

2.  A good dielectric

3.  Neither a good conductor, nor a good dielectric

4.  A good magnetic material

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4
Correct Answer :

Good conductor


Explanation :
No Explanation available for this question

For an infinite linear current, four loops are shown in the given figure. The magnetic flux would be the maximum through the loop number

1.  1

2.  2

3.  3

4.  4

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4
Correct Answer :

2


Explanation :
No Explanation available for this question

Consider a transmission line of characteristic impedance 50 ohm. Let it be terminated at one end by + j50 ohm. The VSWR produced by it in the transmission line will be

1.   +1

2.  0

3.  ∞

4.   +j

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4
Correct Answer :

∞


Explanation :
No Explanation available for this question
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