# Directional Couplers MCQ Questions & Answers

Directional Couplers MCQs : This section focuses on the "Directional Couplers". These Multiple Choice Questions (MCQs) should be practiced to improve the Directional Couplers skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Coupled line couplers are:

A. symmetric couplers
B. asymmetric couplers
C. in phase couplers
D. type of hybrid coupler

Question 2

Dielectric and conductor loss have no effect on the directivity of the coupled line coupler.

A. TRUE
B. FALSE

Question 3

For coupled line coupler, if the voltage coupling factor is 0.1 and the characteristic impedance of the microstrip line is 50 Ω, even mode characteristic impedance is:

A. 50.23 Ω
B. 55.28 Ω
C. 100 Ω
D. 80.8 Ω

Question 4

If the coupling coefficient of a coupled line coupler is 0.1 and the characteristic impedance of the material is 50 Ω, then the odd mode characteristic impedance is:

A. 45.23 Ω
B. 50 Ω
C. 38 Ω
D. none of the mentioned

Question 5

In coupled line directional couplers, power from one line to another is transmitted through a microstrip line running between them.

A. TRUE
B. FALSE

Question 6

Multisection couplers have a very narrow operational bandwidth which is a major disadvantage.

A. TRUE
B. FALSE

Question 7

The capacitance per unit length of broadside parallel lines with width W and separation d is:

A. ∈W/d
B. ∈d/W
C. dW/∈
D. none of the mentioned

Question 8

The mode of propagation of propagation supported by coupled line couplers is:

A. TM mode
B. TE mode
C. TEM mode
D. quasi TEM mode

Question 9

The number of conductors used in the construction of coupled line couplers is fixed.

A. TRUE
B. FALSE