MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Engineering (MCQ) questions & answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Consider the assertions given below. Which is the correct sequential order of process adopted in glass fiber preparation?A. Drawing of fiberB. Production of pure glassC. Pulling of fiberD. Conversion of pure glass into preform |
| A. | B, D, A, C |
| B. | A, B, C, D |
| C. | C, A, D, B |
| D. | D, B, A, C |
| Answer» B. A, B, C, D | |
| 2. |
If a fiber operates at 1400nm with the diameter of about 10 m, n = 1.30, = 0.80% , V = 3.5, then how many modes will it have? |
| A. | 6.125 |
| B. | 9.655 |
| C. | 12.95 |
| D. | 16.55 |
| Answer» B. 9.655 | |
| 3. |
Consider a crystal of ruby laser whose length is 6 cm and the refractive index is 1.8, emits the wavelength of about 0.55 m. What will be the value of number of longitudinal modes? |
| A. | 3.9 x 10 |
| B. | 4.9 x 10 |
| C. | 5.6 x 10 |
| D. | 7.7 x 10 |
| Answer» B. 4.9 x 10 | |
| 4. |
Which is the correct order of sequential steps for an electric arc fusion technique?A. Pressing of fiber ends for fusion B. Application of heat for smoothening of end-surfacesC. Alignment of broken fiber edges |
| A. | A, B, C |
| B. | B, A, C |
| C. | C, B, A |
| D. | C, A, B |
| Answer» D. C, A, B | |
| 5. |
In an optical fiber, the concept of Numerical aperture is applicable in describing the ability of__________ |
| A. | Light Collection |
| B. | Light Scattering |
| C. | Light Dispersion |
| D. | Light Polarization |
| Answer» B. Light Scattering | |
| 6. |
Which type of fiber optic cable has/have its/their core with the size of about 480 m to 980 m & made up of polymethylmethacrylate (PMMA)? |
| A. | Glass fiber optic cable |
| B. | Plastic fiber optic cable |
| C. | Plastic clad silica fiber optic cable |
| D. | All of the above |
| Answer» C. Plastic clad silica fiber optic cable | |
| 7. |
For a photo-diode with responsivity of 0.50 A/W & optical power of about 12 W, what would be the value of generated photocurrent? |
| A. | 3 A |
| B. | 6 A |
| C. | 9 A |
| D. | 12 A |
| Answer» C. 9 A | |
| 8. |
In fiber fault location, the equation of length (l) for time difference (t) is expressed as L = ct / 2n . Which factor in this equation implies that the light travels a length from source to break point and then through another length on the return trip? |
| A. | L |
| B. | c |
| C. | t |
| D. | 2 |
| Answer» E. | |
| 9. |
Consider the assertions/ characteristics given below. Which type of attenuation measurement technique exhibits these characteristics?1. Necessity of accessing both ends of fiber.2. Measurements corresponding to specific wavelengths.3. Requirement of spectral response over a range of wavelengths. |
| A. | Cutback Technique |
| B. | Insertion Loss Technique |
| C. | Use of OTDR Technique |
| D. | None of the above |
| Answer» B. Insertion Loss Technique | |
| 10. |
Speckle pattern is generated due to interference of nodes from a coherent source especially when the coherence time of source is _________ the intermodal dispersion time in the fiber. |
| A. | Less than |
| B. | Greater than |
| C. | Equal to |
| D. | None of the above |
| Answer» C. Equal to | |
| 11. |
Which among the following are the disadvantages of an optical feedback transimpedance receiver?A. Increase in receiver input capacitance B. Increase in dark currentC. Decrease in receiver input capacitanceD. Decrease in dark current |
| A. | A & B |
| B. | C & D |
| C. | A & D |
| D. | B & C |
| Answer» B. C & D | |