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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. | |