MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communication knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Skew rays follow a ___________ |
| A. | Hyperbolic path along the axis |
| B. | Parabolic path along the axis |
| C. | Helical path |
| D. | Path where rays changes angles at core-cladding interface |
| Answer» D. Path where rays changes angles at core-cladding interface | |
| 2. |
Meridional rays in graded index fibers follow ____________ |
| A. | Straight path along the axis |
| B. | Curved path along the axis |
| C. | Path where rays changes angles at core-cladding interface |
| D. | Helical path |
| Answer» C. Path where rays changes angles at core-cladding interface | |
| 3. |
Most of the optical power is carried out in core region than in cladding. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
For lower bandwidth applications ______________ |
| A. | Single mode fiber is advantageous |
| B. | Photonic crystal fibers are advantageous |
| C. | Coaxial cables are advantageous |
| D. | Multimode fiber is advantageous |
| Answer» E. | |
| 5. |
A single-mode step-index fiber or multimode step-index fiber allows propagation of only one transverse electromagnetic wave. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
A step-index fiber has core refractive index 1.46 and radius 4.5μm. Find the cutoff wavelength to exhibit single mode operation. Use relative index difference as 0.25%. |
| A. | 1.326μm |
| B. | 0.124μm |
| C. | 1.214μm |
| D. | 0.123μm |
| Answer» D. 0.123μm | |
| 7. |
A graded-index fiber has a core with parabolic refractive index profile of diameter of 30μm, NA=0.2, λ=1μm. Estimate the normalised frequency. |
| A. | 19.32 |
| B. | 18.84 |
| C. | 16.28 |
| D. | 17.12 |
| Answer» C. 16.28 | |
| 8. |
WHAT_IS_THE_UNIT_OF_NORMALIZED_FREQUENCY??$ |
| A. | Hertz |
| B. | Meter/sec |
| C. | Coulombs |
| D. | It is a dimensionless quantity |
| Answer» E. | |
| 9. |
Skew_rays_follow_a$ |
| A. | Hyperbolic path along the axis |
| B. | Parabolic path along the axis |
| C. | Helical path |
| D. | Path where rays changes angles at core-cladding interface |
| Answer» D. Path where rays changes angles at core-cladding interface | |
| 10. |
Meridional rays in graded index fibers follo? |
| A. | Straight path along the axis |
| B. | Curved path along the axis |
| C. | Path where rays changes angles at core-cladding interface |
| D. | Helical path |
| Answer» C. Path where rays changes angles at core-cladding interface | |
| 11. |
Most of the optical power is carried out in core region than in cladding. State true or false: |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
For lower bandwidth applications, |
| A. | Single mode fiber is advantageous |
| B. | Photonic crystal fibers are advantageous |
| C. | Coaxial cables are advantageous |
| D. | Multimode fiber is advantageous |
| Answer» E. | |
| 13. |
One of the given statements is true for intermodal dispersion. Choose the right one. |
| A. | Low in single mode and considerable in multimode fiber |
| B. | Low in both single mode and multimode fiber |
| C. | High in both single mode and multimode fiber |
| D. | High in single mode and low in multimode fiber |
| Answer» B. Low in both single mode and multimode fiber | |
| 14. |
A step-index fiber has core refractive index 1.46 and radius 4.5μm. Find the cutoff wavelength to exhibit single mode operation. Use relative index difference as 0.25%.$ |
| A. | 1.326μm |
| B. | 0.124μm |
| C. | 1.214μm |
| D. | 0.123μm |
| Answer» D. 0.123‚âà√≠¬¨‚à´m | |
| 15. |
A graded-index fiber has a core with parabolic refractive index profile of diameter of 30μm, NA=0.2, λ=1μm. Estimate the normalised frequency.$ |
| A. | 19.32 |
| B. | 18.84 |
| C. | 16.28 |
| D. | 17.12 |
| Answer» C. 16.28 | |
| 16. |
A multimode step index fiber has a normalized frequency of 72. Estimate the number of guided modes. |
| A. | 2846 |
| B. | 2592 |
| C. | 2432 |
| D. | 2136 |
| Answer» C. 2432 | |