Explore topic-wise MCQs in Microwave Engineering.

This section includes 19 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 the reflection co efficient of a 2 port network is 0.25 then the return network loss in the network is:

A. 12.05 dB
B. 0.15 dB
C. 20 dB
D. 10 dB
Answer» B. 0.15 dB
Discussion
2.

If the reflection co efficient of a 2 port network is 0.5 then the return network loss in the network is:

A. 6.5 dB
B. 0.15 dB
C. 6.020 dB
D. 10 dB
Answer» D. 10 dB
Discussion
3.

Scattering matrix for a lossless matrix is:

A. Unitary
B. Symmetric
C. Identity matrix
D. Null matrix
Answer» B. Symmetric
Discussion
4.

S₁₂=0.85-45⁰ and S₁₂=0.85 +45⁰ for a two port network. Then the two port network is:

A. Non-reciprocal
B. Lossless
C. Reciprocal
D. Lossy
Answer» B. Lossless
Discussion
5.

Scattering matrix for a reciprocal network is:

A. Symmetric
B. Unitary
C. Skew symmetric
D. Identity matrix
Answer» B. Unitary
Discussion
6.

For a one port network , the scattering parameter S₁₁ in terms of impedance parameter Z₁₁ is:

A. (Z11-1)/ (Z11+1)
B. (Z11+1)/ (Z11-1)
C. (Z11+1) (Z11-1)
D. Z11
Answer» B. (Z11+1)/ (Z11-1)
Discussion
7.

The device used to get the measurement of S parameters of n- port micro wave network is:

A. CRO
B. Network analyzer
C. Circulator
D. Attenuator
Answer» C. Circulator
Discussion
8.

The specific element Sij of the scattering matrix can be determined as:

A. SIJ= Vi-/Vj+
B. SIJ= Vi+/Vj-
C. S= Vj+/Vi-
D. None of the mentioned
Answer» B. SIJ= Vi+/Vj-
Discussion
9.

The relation between incident voltage matrix , reflected voltage matrix and S matrix for a microwave network:

A. [v-] = [s] [v+].
B. [v+] = [s] [v-].
C. [v-] [v] = [s].
D. [s] = [v] [v-].
Answer» B. [v+] = [s] [v-].
Discussion
10.

IF_THE_REFLECTION_CO_EFFICIENT_OF_A_2_PORT_NETWORK_IS_0.5_THEN_THE_RETURN_NETWORK_LOSS_IN_THE_NETWORK_IS:?$

A. 6.5 dB
B. 0.15 dB
C. 6.020 dB
D. 10 dB
Answer» D. 10 dB
Discussion
11.

If the reflection co efficient of a 2 port network is 0.25 then the return network loss in the network is:$

A. 12.05 dB
B. 0.15 dB
C. 20 dB
D. 10 dB
Answer» B. 0.15 dB
Discussion
12.

Scattering matrix for a lossless matrix is?

A. Unitary
B. Symmetric
C. Identity matrix
D. Null matrix
Answer» B. Symmetric
Discussion
13.

S₁₂=0.85-45⁰ and S₁₂=0.85 +45⁰ for a two port network. Then the two port network is:$

A. Non-reciprocal
B. Lossless
C. Reciprocal
D. Lossy
Answer» B. Lossless
Discussion
14.

Scattering matrix for a reciprocal network is:

A. Symmetric
B. Unitary
C. Skew symmetric
D. Identity matrix
Answer» B. Unitary
Discussion
15.

For a one port network , the scattering parameter S‚ÇÅ‚ÇÅ in terms of impedance parameter Z‚ÇÅ‚ÇÅ is:$

A. (Z<sub>11</sub>-1)/ (Z<sub>11</sub>+1)
B. (Z<sub>11</sub>+1)/ (Z<sub>11</sub>-1)
C. (Z<sub>11</sub>+1) (Z<sub>11</sub>-1)
D. Z<sub>11</sub>
Answer» B. (Z<sub>11</sub>+1)/ (Z<sub>11</sub>-1)
Discussion
16.

The device used to get the measurement of S parameters of n- port micro wave network is:

A. CRO
B. Network analyzer
C. Circulator
D. Attenuator
Answer» C. Circulator
Discussion
17.

The specific element Sij of the scattering matrix can be determined as:

A. S<sub>IJ</sub>= V<sub>i-</sub>/V<sub>j+</sub>
B. S<sub>IJ</sub>= V<sub>i+</sub>/V<sub>j-</sub>
C. S= V<sub>j+</sub>/V<sub>i-</sub>
D. None of the mentioned
Answer» B. S<sub>IJ</sub>= V<sub>i+</sub>/V<sub>j-</sub>
Discussion
18.

The relation between incident voltage matrix , reflected voltage matrix and S matrix for a microwave network:

A. [v-] = [s] [v+].
B. [v+] = [s] [v-].
C. [v-] [v] = [s].
D. [s] = [v] [v-].
Answer» B. [v+] = [s] [v-].
Discussion
19.

S parameters are expressed as a ratio of:

A. Voltage and current
B. Impedance at different ports
C. Indecent and the reflected voltage waves
D. None of the mentioned
Answer» D. None of the mentioned
Discussion