Explore topic-wise MCQs in Microwave Engineering.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

If a transmission line of z =50 is matched using /4 transmission line of z =100 , then the transmission co efficient T is:

A. 1
B. 0.6667
C. 1.3333
D. 2
Answer» C. 1.3333
Discussion
2.

When a transmission line of characteristic impedance(50 ) z is matched to a load by a /4 transmission line of characteristic impedance 100 , then the transmission co efficient is:

A. 1.5
B. 0.5
C. 1.333
D. 2
Answer» D. 2
Discussion
3.

If the reflection co-efficient of a transmission line is 0.334 with a characteristic impedance of 50 then the input impedance of the transmission line is:

A. 100
B. 50
C. 150
D. None of the mentioned
Answer» B. 50
Discussion
4.

For a transmission line , if the input impedance of the transmission line is 100 with a characteristic impedance of 150 , then the magnitude of the reflection co efficient:

A. 0.5
B. 1
C. 0.2
D. 0
Answer» D. 0
Discussion
5.

When a /4 transmission line is used for impedance matching, then which of the following is valid?

A. Standing waves are present on the /4 transmission line
B. No standing waves on the /4 transmission line
C. Standing waves are not present both on the feed line and the matching /4 line
D. Standing waves are present on both the feed line and the matching /4 line
Answer» B. No standing waves on the /4 transmission line
Discussion
6.

Expression for the characteristic impedance of a transmission line( /4) used for impedance matching is:

A. Z<sub>1</sub>= (Z R)L
B. Z<sub>1</sub>= (Z /R)L
C. Z<sub>1</sub>= (Z +R)L
D. None of the mentioned
Answer» B. Z<sub>1</sub>= (Z /R)L
Discussion
7.

If a /4 transmission line is 100 is used to match a transmission line to a load of 100 , then the characteristic impedance of the transmission line is:

A. 100
B. 50
C. 70.71
D. 200
Answer» B. 50
Discussion
8.

If a transmission line of characteristic impedance 50 is to be matched to a load of 100 , then the characteristic impedance of the /4 transmission line to be used is:

A. 70.71
B. 50
C. 100
D. 75
Answer» B. 50
Discussion