# Properties of Dividers And Couplers MCQ’s

This set of RF & Microwave Circuit Design Multiple Choice Questions & Answers (MCQs) focuses on “Properties of Dividers And Couplers”.

1. T- junction is an example for:
a) 2 port network
b) 3 port network
c) 4 port network
d) None of the mentioned

2. A T junction has a 3×3 ‘s’ matrix.
a) True
b) False

3. Power dividers and couplers are ______ microwave components used for power division or power combining.
a) Passive
b) Active
c) Linear
d) Non linear

4. If a device is passive and contains no anisotropic elements, then the device is_______ network.
a) Reciprocal
b) Non reciprocal
c) Lossless
d) Lossy

5. If all the ports of a microwave network are matched, then the diagonal elements of the S matrix of the network is zero.
a) True
b) False

6. A lossless reciprocal 3 port network can be matched at all the three ports.
a) True
b) False

7. Scattering matrix of a reciprocal network is:
a) Symmetric
b) Asymmetric
c) Identity matrix
d) Null matrix

8. If a microwave network is lossless, then S matrix of the microwave network is:
a) Unitary
b) Symmetric
c) Identity matrix
d) Zero matrix

9. A circulator is a 3 port network that allows energy flow in clockwise direction only.
a) True
b) False

10. Coupling factor of a directional coupler must be maximum and is a key factor that determines the performance of the coupler.
a) True
b) False

11. Isolation of a directional coupler is a measure of the:
a) Power delivered to the uncoupled port
b) Power delivered to the coupled port
c) Power delivered to the second port
d) None of the mentioned

12. The diagonal elements of the S matrix of an improperly matched circulator is zero.
a) True
b) False

13. Directivity of a directional coupler signifies the direction of power flow in the coupler.
a) True
b) False

14. Insertion loss is the power delivered to the through port.
a) True
b) False

15. In a symmetric coupler, the power delivered to the through port and output port are equal.
a) True
b) False

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