# A lossless transmission line is terminated in a mismatch load, If the normalized load impedance is(3+j 4)Ω, the reflection co-efficient is

1.  0.66

2.  0.75

3.  0.8

4.  None of these

4

0.8

Explanation :
No Explanation available for this question

# An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 Ω The standing wave ratio will be

1.  1.5

2.  3.5

3.  2.5

4.  4.5

4

1.5

Explanation :
No Explanation available for this question

# Whenever a lossless transmission line is terminated in a resistive load impedance larger than the characteristics impedance of the line, the first maximum of the voltage standing wave pattern starting from the load end occurs at

1.  (λ/4) from the load end

4.  Anywhere between (λ/4) and (λ/2) from the load end

4

Explanation :
No Explanation available for this question

# Two transmission (X) and (Y) cut from the same section of a line are 10 m and 20 long respectively. Assuming that characteristic impedance of (X) is 50 Ω, the characteristic impedance of (Y) would be

1.  50Ω

2.  25 Ω

3.  100 Ω

4.  200 Ω

4

50Ω

Explanation :
No Explanation available for this question

# Standing wave ration (SWR) on a transmission line

1.  Is directly proportional to the load impedance and inversely proportional to the characterstic impedance

2.   Is directly proportional to the characteristic impedance and inversely proportional to the load impedance

3.  May be defined as either (ZL/Z0) or (Z0/ZL)

4.  None of these

4

May be defined as either (ZL/Z0) or (Z0/ZL)

Explanation :
No Explanation available for this question

# Two transmission linear have SWRs of (1/16) and 2 respectively

1.  The one with SWR = 2 is better matched to the load

2.  The one with SWR = 1/6 is better matched to the load

3.  Both are equally well matched

4.  None of these

4

The one with SWR = 2 is better matched to the load

Explanation :
No Explanation available for this question

# Standing wave ratio (SWR) equal to unity implies that

1.  The transmission line is open circuite

2.  The transmission line is short circuite

3.  The transmission line’s characteristic impedance equals load impedance

4.  None of these

4

The transmission line’s characteristic impedance equals load impedance

Explanation :
No Explanation available for this question

# Higher value of SWR signifience

1.  Higher ohmic losses

2.  Higher ohmic losses and possibility of insulation breakdown

4.   None of these

4

Higher ohmic losses and possibility of insulation breakdown

Explanation :
No Explanation available for this question

# A transmission line having a reflection co-efficient of (1/3) when terminated in a certain load would have VSWR

1.  2

2.  1/2

3.  3

4.  1/3

4

2

Explanation :
No Explanation available for this question

1.  25 Ω

2.  50 Ω

3.  100 Ω

4.  200 Ω

4