Explore topic-wise MCQs in Microwave Engineering.

This section includes 17 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.

Using the relation for total reflection co-efficient certain designs of matching networks can be made as per practical requirements.

A. True
B. False
Answer» B. False
Discussion
2.

The total approximate reflection coefficient is a finite sum of reflection co-efficient of individual matching section of the matching network.

A. True
B. False
Answer» B. False
Discussion
3.

If ZL< Z0, then the reflection coefficient at that junction is:

A. ГN<0
B. ГN>0
C. ГN>1
D. None of the mentioned
Answer» B. ГN>0
Discussion
4.

To compute the total reflection of a multi-section transmission line, the lengths of the transmission lines considered are all unequal.

A. True
B. False
Answer» C.
Discussion
5.

If a λ/4 transmission line is used for impedance matching, then always Г1> Г3.

A. True
B. False
Answer» B. False
Discussion
6.

The e-2jθ term in the expression for total reflection in a single section quarter wave transformer impedance matching network Г=Г1+ Г3e-2jθ signifies:

A. Phase delay
B. Frequency change
C. Narrowing bandwidth
D. None of the mentioned
Answer» B. Frequency change
Discussion
7.

IF_ZL

A. –ì<sub>N</sub><0
B. –ì<sub>N</sub>>0
C. –ì<sub>N</sub>>1
D. None of the mentioned
Answer» B. ‚Äö√Ñ√¨‚àö¬®<sub>N</sub>>0
Discussion
8.

Using the relation for total reflection co-efficient certain designs of matching networks can be made as per practical requirements.$

A. True
B. False
Answer» B. False
Discussion
9.

The_total_approximate_reflection_coefficient_is_a_finite_sum_of_reflection_co-efficient_of_individual_matching_section_of_the_matching_network.$

A. True
B. False
Answer» B. False
Discussion
10.

To compute the total reflection of a multi-section transmission line, the lengths of the transmission lines considered are all unequal?

A. True
B. False
Answer» C.
Discussion
11.

If a λ/4 transmission line is used for impedance matching, then always Г1> Г3.$

A. True
B. False
Answer» B. False
Discussion
12.

If the first and the third reflection coefficients of a matched line is 0.2 and 0.01, then the total reflection coefficient if quarter wave transformer is used for impedance matching is:

A. 0.2
B. 0.01
C. 0.21
D. 0.19
Answer» E.
Discussion
13.

The e-2jθ term in the expression for total reflection in a single section quarter wave transformer impedance matching network Г=Г1+ Г3e-2jθ signifies:$

A. Phase delay
B. Frequency change
C. Narrowing bandwidth
D. None of the mentioned
Answer» B. Frequency change
Discussion
14.

The expression for total reflection in the simplified form is given by:

A. Г=Г<sub>1</sub>+ Г<sub>3</sub>e<sup>-2jθ</sup>
B. –ì=–ì1<sub>1</sub>+–ì<sub>3</sub>
C. Г=Г<sub>12</sub>+ Г<sub>3</sub>e<sup>-2jθ</sup>
D. Г= Г<sub>1</sub>+ Г<sub>2</sub>e<sup>-2jθ</sup>
Answer» B. ‚Äö√Ñ√¨‚àö¬®=‚Äö√Ñ√¨‚àö¬®1<sub>1</sub>+‚Äö√Ñ√¨‚àö¬®<sub>3</sub>
Discussion
15.

In the multiple reflections analysis method, the total reflection is:

A. An infinite sum of partial reflections
B. An infinite sum of partial reflection and transmissions
C. Constant value
D. Finite sum of partial reflections
Answer» C. Constant value
Discussion
16.

The overall reflection coefficient of a matching quarter wave transformer cannot be calculated because of physical constraints.

A. True
B. False
Answer» C.
Discussion
17.

Discontinuities in the matching quarter wave transformer are not of considerable amount and are negligible.

A. True
B. False
Answer» C.
Discussion