# A transmission line quarter wave section is used to reject an interfacing frequency of 100 MHz its approximate length is

1.  3 m

2.  1.5 m

3.  75 cm

4.  None of these

4

75 cm

Explanation :
No Explanation available for this question

# In a particular transmission line, electromagnetic waves were found to travel with a velocity of 2.7 x 1010 cm/s. Its velocity factor is

1.   0.7

2.  0.8

3.  0.9

4.  0.5

4

0.9

Explanation :
No Explanation available for this question

# An SWR of 5 on a transmission line leads to a reflection co-efficient of

1.  0.6

2.  0.75

3.  0.8

4.  None of these

4

0.6

Explanation :
No Explanation available for this question

# A (75-j50) Ω load is connected to a coaxial transmission line of Z0 = 75 Ω, at 10 GHz. The best method of matching consists in connecting

1.  A short circuited stub at the load

2.  An inductance at the load

3.  A capacitance at some specific distance from the load

4.  A short-circuited stub at some specific distance from the load

4

Explanation :
No Explanation available for this question

# The velocity factor or transmission line

1.   Depends on the dielectric constant of the material used

2.   Increases the velocity along the transmission line

3.   In governed by the skin effect

4.  Is higher for a soled dielectric than for air

4

Depends on the dielectric constant of the material used

Explanation :
No Explanation available for this question

# Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is:

1.  the same as that produced by one plate

2.  double of the field produced by one plate

3.  dependent on coordinates of field point.

4.  zero

4

zero

Explanation :
No Explanation available for this question

# Magnetic flux density at a point distant R due to an infinitely long linear conductor carrying a current I is given by

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# A certain transmission line has four discontinuities with reflection co-efficients of 1/2, 1/3, 1/4 1/6 . The overall reflection co-efficient on this line is approximately equal to

1.  1/3

2.   3/5

3.   2/3

4.  None of these

4

2/3

Explanation :
No Explanation available for this question

# In the above question, the overall SWR is

1.  2

2.  3.5

3.  4

4.  4.5

4

3.5

Explanation :
No Explanation available for this question

1.  Nil

2.  0.33 n sec

3.  0.3 sec

4.   033 sec

4