Explore topic-wise MCQs in Microwave Engineering.

This section includes 13 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.

The phase velocity of the waves in both even and odd mode of a Lange coupler is equal.

A. true
B. false
Answer» C.
2.

For a 4 wire Lange coupler, if the odd mode and even mode capacitances are 12pF and 9pF respectively, then the equivalent capacitance in terms of two wired coupled line in odd mode is:

A. 18.56 pF
B. 25.71 pF
C. 42 pF
D. 31.6 pF
Answer» C. 42 pF
3.

For a 4 wire Lange coupler, if the odd mode and even mode capacitances are 12pF and 9pF respectively, then the equivalent capacitance in terms of two wired coupled line in even mode is:

A. 15.1 pF
B. 16.7 pF
C. 12 pF
D. 9 pF
Answer» C. 12 pF
4.

FOR_A_4_WIRE_LANGE_COUPLER,_IF_THE_ODD_MODE_AND_EVEN_MODE_CAPACITANCES_ARE_12PF_AND_9PF_RESPECTIVELY,_THEN_THE_EQUIVALENT_CAPACITANCE_IN_TERMS_OF_TWO_WIRED_COUPLED_LINE_IN_ODD_MODE_IS:?$

A. 18.56 pF
B. 25.71 pF
C. 42 pF
D. 31.6 pF
Answer» C. 42 pF
5.

The_phase_velocity_of_the_waves_in_both_even_and_odd_mode_of_a_Lange_coupler_is_equal.$

A. true
B. false
Answer» C.
6.

For a 4 wire Lange coupler, if the odd mode and even mode capacitances are 12pF and 9pF respectively, then the equivalent capacitance in terms of two wired coupled line in even mode is?

A. 15.1 pF
B. 16.7 pF
C. 12 pF
D. 9 pF
Answer» C. 12 pF
7.

In a Lange coupler having 4 lines, the adjacent lines are connected so as to act as two conductors in parallel.

A. true
B. false
Answer» C.
8.

Even mode characteristic impedance of a Lange coupler:

A. (V<sub>p</sub>.C<sub>ep</sub>)<sup>-1</sup>
B. V<sub>p</sub>.C<sub>ep</sub>
C. (V<sub>p</sub>.L<sub>ep</sub>)<sup>-1</sup>
D. V<sub>p</sub>.L<sub>ep</sub>
Answer» B. V<sub>p</sub>.C<sub>ep</sub>
9.

For even mode excitation of a Lange coupler, all the four lines of the Lange coupler are at:

A. equal potential
B. zero potential
C. unequal potential
D. negative potential
Answer» B. zero potential
10.

A major disadvantage of Lange coupler is:

A. high power loss
B. complex construction
C. low gain
D. none of the mentioned
Answer» C. low gain
11.

Lange coupler is a type of Quadrature hybrid.

A. true
B. false
Answer» B. false
12.

Lange couplers consist of four parallel lines that are ______ coupled.

A. tightly
B. loosely
C. partially
D. none of the mentioned
Answer» B. loosely
13.

The major disadvantage of coupled line coupler is:

A. complex construction
B. low power gain
C. higher loss
D. none of the mentioned
Answer» E.