MCQOPTIONS
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MCQOPTIONS
This section includes 28 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 wave impedance for a non-propagating mode in TE mode is: |
| A. | K/β |
| B. | Imaginary |
| C. | Zero |
| D. | Non-existing |
| Answer» C. Zero | |
| 2. |
If the distance between the two plates of a parallel plate waveguide is 20 mm and is operating in TE₂ mode, then the cut off frequency of TE₂ mode is: |
| A. | 20 MHz |
| B. | 15 GHz |
| C. | 5 GHz |
| D. | None of the mentioned |
| Answer» C. 5 GHz | |
| 3. |
If in a parallel plate waveguide, PL=4 mW/m and Pₒ=10 mW/m, then what is the conduction loss? |
| A. | 0.5 |
| B. | 0.4 |
| C. | 0.1 |
| D. | 0.2 |
| Answer» E. | |
| 4. |
For a parallel plate waveguide, which of the following is true? |
| A. | No real power flow occurs in the ‘z’ direction |
| B. | Power flow occurs in ‘z’ direction |
| C. | No power flow occurs in any direction |
| D. | Wave propagation in z direction is not possible in any mode |
| Answer» B. Power flow occurs in ‘z’ direction | |
| 5. |
Phase velocity of the plane waves in the two direction in a parallel plate waveguide is: |
| A. | 1/√(μ∈)secant θ |
| B. | 1/√(μ∈)cosecant θ |
| C. | 1/√(μ∈)tangent θ |
| D. | 1/√(μ∈)cosine θ |
| Answer» B. 1/√(μ∈)cosecant θ | |
| 6. |
For a parallel waveguide, the dominant mode for TM propagation is: |
| A. | TM0 mode |
| B. | TM1 mode |
| C. | TM2 mode |
| D. | Dominant mode does not exist |
| Answer» C. TM2 mode | |
| 7. |
For TM2 mode, if the distance between two parallel plates of a waveguide are 40 mm, then the cut off wavelength for TM2 mode is: |
| A. | 20 mm |
| B. | 80 mm |
| C. | 40 mm |
| D. | 60 mm |
| Answer» D. 60 mm | |
| 8. |
In a parallel plate waveguide, for a propagating mode, the value of β is: |
| A. | Real |
| B. | Complex |
| C. | Imaginary |
| D. | Cannot be defined |
| Answer» B. Complex | |
| 9. |
The wave impedance of a TM mode in a parallel plate waveguide is a: |
| A. | Function of frequency |
| B. | Independent of frequency |
| C. | Proportional to square of frequency |
| D. | Inversely proportional to square of frequency |
| Answer» B. Independent of frequency | |
| 10. |
In TM mode, if the direction of wave propagation is in ‘z’ direction, then: |
| A. | HZ=0 |
| B. | EZ=0 |
| C. | EY=0 |
| D. | HY=0 |
| Answer» B. EZ=0 | |
| 11. |
If the width of a parallel plate waveguide is 30 mm and the distance between the parallel pates is 5 mm, with an intrinsic impedance of 377Ω, then the characteristic impedance of the wave is: |
| A. | 50 Ω |
| B. | 62.833 Ω |
| C. | 100 Ω |
| D. | None of the mentioned |
| Answer» C. 100 Ω | |
| 12. |
The characteristic impedance of a parallel plate waveguide is given by: |
| A. | η*D/W |
| B. | η*W/D |
| C. | D/ η*W |
| D. | η*√(D/W) |
| Answer» B. η*W/D | |
| 13. |
The fringe effect can be neglected in a parallel plate waveguide is because of: |
| A. | The dielectric material used |
| B. | Width of the plates is greater than the distance between the plates |
| C. | Material of the parallel plate waveguide used |
| D. | None of the mentioned |
| Answer» C. Material of the parallel plate waveguide used | |
| 14. |
FOR_A_PARALLEL_WAVEGUIDE,_THE_DOMINANT_MODE_FOR_TM_PROPAGATION_IS:?$ |
| A. | TM0 mode |
| B. | TM1 mode |
| C. | TM2 mode |
| D. | Dominant mode does not exist |
| Answer» C. TM2 mode | |
| 15. |
For a parallel plate waveguide, which of the following is true?$ |
| A. | No real power flow occurs in the ‘z’ direction |
| B. | Power flow occurs in ‘z’ direction |
| C. | No power flow occurs in any direction |
| D. | Wave propagation in z direction is not possible in any mode |
| Answer» B. Power flow occurs in ‚Äö√Ñ√∂‚àö√ë‚àö‚â§z‚Äö√Ñ√∂‚àö√ë‚àö¬• direction | |
| 16. |
Phase_velocity_of_the_plane_waves_in_the_two_direction_in_a_parallel_plate_waveguide_is:$ |
| A. | 1/√(μ∈)secant θ |
| B. | 1/√(μ∈)cosecant θ |
| C. | 1/√(μ∈)tangent θ |
| D. | 1/√(μ∈)cosine θ |
| Answer» B. 1/‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ(‚âà√≠¬¨‚à´‚Äö√Ñ√∂‚àö‚Ć‚àö‚Ć)cosecant ‚âà√≠‚Äö√†√® | |
| 17. |
The wave impedance for a non-propagating mode in TE mode is: |
| A. | K/β |
| B. | Imaginary |
| C. | Zero |
| D. | Non-existing |
| Answer» C. Zero | |
| 18. |
If the distance between the two plates of a parallel plate waveguide is 20 mm and is operating in TE‚ÇÇ mode, then the cut off frequency of TE‚ÇÇ mode is:$ |
| A. | 20 MHz |
| B. | 15 GHz |
| C. | 5 GHz |
| D. | None of the mentioned |
| Answer» C. 5 GHz | |
| 19. |
If in a parallel plate waveguide, PL=4 mW/m and P‚Çí=10 mW/m, then what is the conduction loss?$ |
| A. | 0.5 |
| B. | 0.4 |
| C. | 0.1 |
| D. | 0.2 |
| Answer» E. | |
| 20. |
TE mode is characterized by: |
| A. | E<sub>Z</sub>=0 |
| B. | H<sub>Z</sub>=0 |
| C. | E<sub>x</sub>=0 |
| D. | E<sub>y</sub>=0 |
| Answer» B. H<sub>Z</sub>=0 | |
| 21. |
For TM2 mode, if the distance between two parallel plates of a waveguide are 40 mm, then the cut off wavelength for TM2 mode is? |
| A. | 20 mm |
| B. | 80 mm |
| C. | 40 mm |
| D. | 60 mm |
| Answer» D. 60 mm | |
| 22. |
In a parallel plate waveguide, for a propagating mode, the value of β is:$ |
| A. | Real |
| B. | Complex |
| C. | Imaginary |
| D. | Cannot be defined |
| Answer» B. Complex | |
| 23. |
The wave impedance of a TM mode in a parallel plate waveguide is a: |
| A. | Function of frequency |
| B. | Independent of frequency |
| C. | Proportional to square of frequency |
| D. | Inversely proportional to square of frequency |
| Answer» B. Independent of frequency | |
| 24. |
In TM mode, if the direction of wave propagation is in ‘z’ direction, then:$ |
| A. | H<sub>Z</sub>=0 |
| B. | E<sub>Z</sub>=0 |
| C. | E<sub>Y</sub>=0 |
| D. | H<sub>Y</sub>=0 |
| Answer» B. E<sub>Z</sub>=0 | |
| 25. |
If the width of a parallel plate waveguide is 30 mm and the distance between the parallel pates is 5 mm, with an intrinsic impedance of 377Ω, then the characteristic impedance of the wave is:$ |
| A. | 50 Ω |
| B. | 62.833 Ω |
| C. | 100 Ω |
| D. | None of the mentioned |
| Answer» C. 100 ‚âà√≠¬¨¬© | |
| 26. |
The characteristic impedance of a parallel plate waveguide is given by: |
| A. | η*D/W |
| B. | η*W/D |
| C. | D/ η*W |
| D. | η*√(D/W) |
| Answer» B. ‚âà√≠‚Äö√†√´*W/D | |
| 27. |
The fringe effect can be neglected in a parallel plate waveguide is because of: |
| A. | The dielectric material used |
| B. | Width of the plates is greater than the distance between the plates |
| C. | Material of the parallel plate waveguide used |
| D. | None of the mentioned |
| Answer» C. Material of the parallel plate waveguide used | |
| 28. |
The modes of wave propagation that a parallel plate waveguide can support are: |
| A. | TEM, TE, TM modes |
| B. | TM, TE modes |
| C. | TEM, TM modes |
| D. | TEM, TE modes |
| Answer» B. TM, TE modes | |