MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The ratio of the photons converted to signal generating electrons to the total number of photons arriving is called as? |
| A. | Quantum efficiency |
| B. | Photon ratio |
| C. | Conversion ratio |
| D. | Photons to electron ratio |
| Answer» B. Photon ratio | |
| 2. |
The effect of night sky background effect is negligible with respect to star power. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The sky background power does not depend on _______ |
| A. | Effective entrance area to the telescope |
| B. | Field of view of the telescope |
| C. | Background radiance |
| D. | Intensity of observing star |
| Answer» E. | |
| 4. |
The star signal power does not depend on _____________ |
| A. | Spectral irradiance of stellar light |
| B. | Spectral response of the light detector |
| C. | Brightness of the star |
| D. | Size of the star |
| Answer» E. | |
| 5. |
THE_SKY_BACKGROUND_POWER_DOES_NOT_DEPEND_ON________?$ |
| A. | Effective entrance area to the telescope |
| B. | Field of view of the telescope |
| C. | Background radiance |
| D. | Intensity of observing star |
| Answer» E. | |
| 6. |
The ratio of the photons converted to signal generating electrons to the total number of photons arriving is called as?$ |
| A. | Quantum efficiency |
| B. | Photon ratio |
| C. | Conversion ratio |
| D. | Photons to electron ratio |
| Answer» B. Photon ratio | |
| 7. |
The_effect_of_night_sky_background_effect_is_negligible_with_respect_to_star_power.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The threshold level of star detection is a function of _________ |
| A. | Star brightness |
| B. | Star position fix |
| C. | Star size |
| D. | Sky view |
| Answer» B. Star position fix | |
| 9. |
The use of ______ allows a small sky background view with a large telescopic field view? |
| A. | CCD |
| B. | CVF |
| C. | VVR |
| D. | CSK |
| Answer» B. CVF | |
| 10. |
The photovoltaic or photoconductive detectors are packaged as ___________ |
| A. | Star detectors |
| B. | Star position fixer |
| C. | Charge coupled devices |
| D. | Photon coupled devices |
| Answer» D. Photon coupled devices | |
| 11. |
The star signal power does not depend on ____________? |
| A. | Spectral irradiance of stellar light |
| B. | Spectral response of the light detector |
| C. | Brightness of the star |
| D. | Size of the star |
| Answer» E. | |
| 12. |
Anti reflection coated optics reduce __________ |
| A. | Optical transmission losses |
| B. | Reflection angle |
| C. | Refraction |
| D. | Intensity of star image |
| Answer» B. Reflection angle | |
| 13. |
Star signal power is directly proportional to an effective area of a telescope. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
The ratio of the focal length to aperture is called the __________ |
| A. | Critical aperture |
| B. | Effective aperture |
| C. | Focal number |
| D. | f/ number |
| Answer» E. | |
| 15. |
The physical size of the star depends upon __________ |
| A. | Angular size of image |
| B. | Intensity of image |
| C. | Colour of image |
| D. | Shape of image |
| Answer» B. Intensity of image | |
| 16. |
What is the image of the star at the focal plane called as? |
| A. | Star fixed image |
| B. | Celestial interference image |
| C. | Diffraction limited image |
| D. | Spot image |
| Answer» D. Spot image | |
| 17. |
What is the physical diameter of the first optical element in the telescope? |
| A. | Optical aperture |
| B. | Field of view |
| C. | Effective focal length |
| D. | Light detector |
| Answer» B. Field of view | |
| 18. |
Which of the following uses lens and mirrors for focusing? |
| A. | Refractive |
| B. | Reflecting |
| C. | Catadioptric |
| D. | Orthogonal |
| Answer» D. Orthogonal | |