Value of and conductor is as shown in figure, will be

1.  4π+2

2.  4π-2

3.  4π+3

4.  4π-3

View Answer  
4
Correct Answer :

4π-2


Explanation :
No Explanation available for this question

Are of strip α≤θ≤β on spherical shell of radius a

1.  2απ(cos α-cos β)

2.  2πα2(cos α-cos β)

3.  2πα2(cos α+cos β)

4.  2πα(cos α+cos β)

View Answer  
4
Correct Answer :

2πα2(cos α-cos β)


Explanation :
No Explanation available for this question

Which of the following is the equivalent circuit of aperture coupled lossy cavity

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

Antena impedance when connected to a 150Ωloss-less with SWR=2.6 voltage maximum are 120cm apart and last maximum is 40 cm from antenna

1.  72+j72

2.  36+j36

3.  72-j72

4.  36-j36

View Answer  
4
Correct Answer :

72+j72


Explanation :
No Explanation available for this question

Antena impedance when connected to a 90Ωloss-less with SWR=3, 1st and 2nd voltage maximum are located at 4cm and 16 cm from antenna

1.  37.62+j45Ω

2.  72-j37Ω

3.  37-j45Ω

4.  72+j37Ω

View Answer  
4
Correct Answer :

37.62+j45Ω


Explanation :
No Explanation available for this question

Admittance of stub(shorted)that will match α ZL = 60+j40Ω, to 50Ω transmission line

1.  0.59=j 0.385

2.  0.58 +j 0.385

3.  0.78+j 451

4.  0.78-j 451

View Answer  
4
Correct Answer :

0.59=j 0.385


Explanation :
No Explanation available for this question

Input impedance of a short circuited coaxial transmission line Z0 = 60Ω, β=j8.5/m length 15 cm

1.  j180Ω

2.  j190Ω

3.  j185Ω

4.  j197Ω

View Answer  
4
Correct Answer :

j197Ω


Explanation :
No Explanation available for this question

Dielectric constant of non-magnetic material separating conductors inner radii as 1.2 mm and other radii as 4 min in a loss-less 60Ω coaxial line

1.  1.25

2.  1.35

3.  1.45

4.  1.85

View Answer  
4
Correct Answer :

1.45


Explanation :
No Explanation available for this question

Impedance Z when a T. L with = 75Ω and a phase velocity of 200 mm/μ sec is terminated is an unknown impedance Z the frequency is 1 GHz and the voltage standing wave ratio on the line is 4. The distance of the first voltage minimum from the load end is 10 cm.

1.  12.75Ω

2.  18.175Ω

3.  24.75Ω

4.  30.75Ω

View Answer  
4
Correct Answer :

18.175Ω


Explanation :
No Explanation available for this question

Impedance Z when a transmission line of characteristic impedance 300Ω is terminated in an unknown impedance Z = R +jx. The standing wave ratio. found be 3. The distance between two consecutive voltage minima is 50 cm. The distance from the load to the first voltage minima is 30cm

1.  310+ j 399

2.  510+ j 399

3.  410+ j 399

4.  610+ j 399

View Answer  
4
Correct Answer :

510+ j 399


Explanation :
No Explanation available for this question
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