MCQOPTIONS
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MCQOPTIONS
This section includes 228 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The information system is the chain of the following operations, 1. Collection of data2. Planning the observations3. Analysis of data4. Decision making process Which one of the chains is correct ? |
| A. | 4, 1, 2, 3 |
| B. | 2, 1, 3, 4 |
| C. | 3, 2, 1, 4 |
| D. | 1, 3, 4, 2 |
| Answer» C. 3, 2, 1, 4 | |
| 2. |
The main functional blocks of a mul-tispectral scanner (MSS) are given below :1. Video processor2. Dispersive system3. Detector4. Signal conditioner5. Collecting opticsWhich one of the following sequences is correct? |
| A. | 1, 4, 5, 3, 2 |
| B. | 5, 3, 2, 4, 1 |
| C. | 5, 2, 3, 1, 4 |
| D. | 1, 3, 2, 4, 5 |
| Answer» D. 1, 3, 2, 4, 5 | |
| 3. |
Assuming as the frequency of radiation, as the threshold frequency and as a constant, the energy of the photo-electrons () is related as |
| A. | ) |
| B. | ) |
| C. | ) |
| Answer» B. ) | |
| 4. |
If electric permittivity and magnetic permeability of the medium are respectively ε and μ, then the velocity () of the electromagnetic wave in the medium is given by : |
| A. | None of these |
| Answer» C. | |
| 5. |
Consider the following statements regarding the satellite imaging :1. The satellite orbit is fixed in the inertial space2. During successive across-track imaging, the earth rotates beneath the sensor3. The satellite images a skewed area Which one of the following statements is/are correct ? |
| A. | 1, 2, 3 |
| B. | 1, 3 |
| C. | 2, 3 |
| D. | 1, 2 |
| Answer» B. 1, 3 | |
| 6. |
For band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length lcoh is: |
| A. | 130 km |
| B. | 230 km |
| C. | 250 km |
| D. | 500 km |
| Answer» C. 250 km | |
| 7. |
The various stages of formation of snow are listed below :1. Formation of ice crystals2. Formation of snow pallets3. Formation of snow flakes4. Formationof snow crystals5. Formation of rimed crystalsWhich one of the following sequences is correct ? |
| A. | 3 2 5 1 4 |
| B. | 5 3 1 2 4 |
| C. | 1 4 3 5 2 |
| D. | 1 3 4 2 5 |
| Answer» D. 1 3 4 2 5 | |
| 8. |
According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index ) on an other medium (refractive index ); |
| A. | the angle of incidence is equal to the angle of refraction |
| B. | the angle of refraction (θ |
| C. | ) is given by |
| D. | Both (a) and (b) |
| E. | neither (a) nor (b) |
| Answer» C. ) is given by | |
| 9. |
Which one of the following relationship between the wave length (λ), and frequency and the speed () of the electromagnetic wave is correct ? |
| A. | = |
| B. | + λ |
| C. | = |
| D. | λ |
| Answer» D. λ | |
| 10. |
The various stages occuring in GPS system are described below :1. Generation of an output to the user2. Detection of the GPS signal3. Processing the data in the built-in-computer4. Decoding the GPS signal.The correct sequence of the stages is : |
| A. | 1, 2, 3, 4 |
| B. | 2, 3, 4, 1 |
| C. | 2, 4, 3, 1 |
| D. | 3, 1, 2 , 4 |
| Answer» D. 3, 1, 2 , 4 | |
| 11. |
If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height |
| A. | h = dp/(b/h) |
| B. | h = (b/h) dp |
| C. | h = dp/(h/b) |
| D. | h = (h/b) dp |
| Answer» B. h = (b/h) dp | |
| 12. |
A and B are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct? |
| A. | height displacement of a will be less than that of b |
| B. | height displacement of b will be less than that of a |
| C. | height displacement of a and b is equal |
| D. | height displacement of a and b will be towards each other |
| Answer» B. height displacement of b will be less than that of a | |
| 13. |
DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within |
| A. | 25 km |
| B. | 50 km |
| C. | 75 km |
| D. | 100 km |
| Answer» E. | |
| 14. |
Pick up the important characteristic of a target which facilitates its identification from the following: |
| A. | spectral variation |
| B. | spatial variation |
| C. | temporal variation |
| D. | all of these |
| Answer» E. | |
| 15. |
The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as: |
| A. | ozone hole |
| B. | atmospheric window |
| C. | ozone window |
| D. | black hole |
| Answer» C. ozone window | |
| 16. |
Which on speed (C) of the electromagnetic wave is correct? |
| A. | c = v |
| B. | c = /v |
| C. | c = v |
| D. | c = 1/ |
| Answer» D. c = 1/ | |
| 17. |
For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is: |
| A. | 130 km |
| B. | 230 km |
| C. | 250 km |
| D. | 500 km |
| Answer» C. 250 km | |
| 18. |
According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index m2); |
| A. | the angle of incidence is equal to the angle of refraction |
| B. | the angle of refraction r) is given by sin i |
| C. | both (a) and (b) |
| D. | neither (a) nor (b) |
| Answer» C. both (a) and (b) | |
| 19. |
The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called: |
| A. | sensors |
| B. | passive sensors |
| C. | active sensors |
| D. | none of these |
| Answer» D. none of these | |
| 20. |
If electric permittivity and magnetic permeability of the medium are respectively and , then the velocity (Cm) of the electromagnetic wave in the medium is given by: |
| A. | cm = 1/ |
| B. | cm |
| C. | cm |
| D. | none of these |
| Answer» C. cm | |
| 21. |
The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target, |
| A. | reduces the contrast of the image and also its sharpness |
| B. | increases the contrast of the image but reduces the sharpness |
| C. | increases both the contrast and sharpness |
| D. | reduces the contrast but increases the sharpness |
| Answer» B. increases the contrast of the image but reduces the sharpness | |
| 22. |
The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called: |
| A. | passive remote sensing |
| B. | active remote sensing |
| C. | neutral remote sensing |
| D. | none of these |
| Answer» C. neutral remote sensing | |
| 23. |
The reflection of solar energy is characterised by the water content in the leaf, in the reflective optical infrared: |
| A. | visible (0.4 - |
| B. | near-ir (0.7 - |
| C. | short wave-ir (1.3 - |
| D. | none of these |
| Answer» D. none of these | |
| 24. |
The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called: |
| A. | reflectance |
| B. | reflectance factor |
| C. | albedo |
| D. | none of these |
| Answer» D. none of these | |
| 25. |
The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called: |
| A. | spectral variation |
| B. | spatial variation |
| C. | temporal variation |
| D. | none of these |
| Answer» C. temporal variation | |
| 26. |
For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is: |
| A. | circular orbit |
| B. | sun-synchronous orbit |
| C. | near polar orbit |
| D. | none of these |
| Answer» C. near polar orbit | |
| 27. |
Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its |
| A. | six ground stations |
| B. | five ground stations |
| C. | four ground stations |
| D. | three ground stations |
| Answer» C. four ground stations | |
| 28. |
Which on speed C. of the electromagnetic wave is correct ? |
| A. | C = v |
| B. | C = /v |
| C. | C = v |
| D. | C = 1/ |
| Answer» D. C = 1/ | |
| 29. |
Which one of the following attributes is not associated with digital maps_______________? |
| A. | Colour |
| B. | Symbology |
| C. | Legends |
| D. | South arrow |
| Answer» E. | |
| 30. |
Which one of the following factors does not affect the scale of the air photographs ? |
| A. | Focal length |
| B. | Flying height |
| C. | Ground elevation |
| D. | None of these |
| Answer» E. | |
| 31. |
Which one of the following frequency regions is a part of sun’s radiation ? |
| A. | Ultraviolet frequency region |
| B. | Infrared frequency region |
| C. | Radio frequency region |
| D. | All of these |
| Answer» E. | |
| 32. |
Which one of the following parameters is accurate for DGPS ? |
| A. | Positional accuracies ~ 1 – 2 m if rover is less than 1-2 km from the reference station |
| B. | Positional accuracies ~ 2 – 5m if rover is less than 2-5 fm from the reference station |
| C. | Positional accuracies ~ 5 – 10 m if rover is less than 5-10 km from reference station |
| D. | Positional accuracies ~ 5 – 10 m if rover is less than 25 km |
| Answer» B. Positional accuracies ~ 2 – 5m if rover is less than 2-5 fm from the reference station | |
| 33. |
Which one of the following parameters is considered to determine the reflectance of a vegetation canopy ? |
| A. | Solar zenith angle |
| B. | Azimuth angle |
| C. | Look angle |
| D. | All of these |
| Answer» E. | |
| 34. |
Which one of the following quantities forms the basis of radiometry ? |
| A. | Radiant energy (Q) |
| B. | Radiant flux (Φe ) |
| C. | Radiant intensity (I) |
| D. | All of these |
| Answer» E. | |
| 35. |
Which one of the following statement is incorrect regarding the electromagnetic radiation ? |
| A. | These are produced by the motion of electric charge |
| B. | The oscillation of charged particles sets up changing electric fields |
| C. | The changing electric fields induce the changing magnetic fields in the surrounding medium |
| D. | None of these |
| Answer» E. | |
| 36. |
Which one of the following statements regarding remote sensing is correct ? |
| A. | The interaction of the electromagnetic radiation with the target |
| B. | The emission of electromagnetic radiation from the target |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 37. |
While propagating through homogeneous, isotropic media_________________? |
| A. | Directions of both the fields are orthogonal |
| B. | Both the fields are at right angles to the direction of propagation |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 38. |
Who coined the term, ‘Remote sensing_______________? |
| A. | Evelyn L. Pruitt, a geographer |
| B. | Gaspard Felix Tournachon, a French scientist |
| C. | Wilbur Wright, an Italian scientist |
| D. | None of these |
| Answer» B. Gaspard Felix Tournachon, a French scientist | |
| 39. |
The various stages occuring in GPS system are described below ?_x005F_x000D_1. Generation of an output to the user_x005F_x000D_2. Detection of the GPS signals_x005F_x000D_3. Processing the data in the built-in-computer_x005F_x000D_4. Decoding the GPS signal_x005F_x000D_The correct sequence of the stages is? |
| A. | 1, 2, 3, 4 |
| B. | 2, 3, 4, 1 |
| C. | 2, 4, 3, 1 |
| D. | 3, 1, 2 , 4 |
| Answer» D. 3, 1, 2 , 4 | |
| 40. |
The value of energy quantum for radiation of any frequency is proportional to________________? |
| A. | The frequency |
| B. | The reciprocal of the energy |
| C. | The square of the frequency |
| D. | The square root of the frequency |
| Answer» B. The reciprocal of the energy | |
| 41. |
The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as__________________? |
| A. | Ozone hole |
| B. | Atmospheric window |
| C. | Ozone window |
| D. | Black hole |
| Answer» C. Ozone window | |
| 42. |
The refractive index of the ocean water_______________? |
| A. | Increases with salinity |
| B. | Increases with temperature |
| C. | Decreases with salinity |
| D. | Decreases with temperature |
| Answer» B. Increases with temperature | |
| 43. |
The reflection of solar energy is characterised by the water content in the leaf, in the reflective optical infrared______________? |
| A. | Visible (0.4 – |
| B. | Near-IR (0.7 – |
| C. | Short wave-IR (1.3 – |
| D. | None of these |
| Answer» D. None of these | |
| 44. |
The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called________________? |
| A. | Reflectance |
| B. | Reflectance factor |
| C. | Albedo |
| D. | None of these |
| Answer» D. None of these | |
| 45. |
The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target_________________? |
| A. | Reduces the contrast of the image and also its sharpness |
| B. | Increases the contrast of the image but reduces the sharpness |
| C. | Increases both the contrast and sharpness |
| D. | Reduces the contrast but increases the sharpness |
| Answer» B. Increases the contrast of the image but reduces the sharpness | |
| 46. |
The optical property of a water body depends on ? |
| A. | Absorption by the dissolved material |
| B. | Absorption by the suspended particulate matter |
| C. | Scattering by the suspended particulate matter |
| D. | All of these |
| Answer» E. | |
| 47. |
The object of photo-interpretation is__________________? |
| A. | Identification |
| B. | Recognition of objects |
| C. | Judging the significance of objects |
| D. | All of these |
| Answer» E. | |
| 48. |
The normal altitude of GPS satellite is about________________? |
| A. | 16,200 km |
| B. | 20,200 km |
| C. | 24,400 km |
| D. | 36,100 km |
| Answer» C. 24,400 km | |
| 49. |
The most widely used antenna in GPS is_______________? |
| A. | Parabolic antenna |
| B. | Microstrip antenna |
| C. | Horn antenna |
| D. | Slotted antenna |
| Answer» C. Horn antenna | |
| 50. |
The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called____________________? |
| A. | Passive remote sensing |
| B. | Active remote sensing |
| C. | Neutral remote sensing |
| D. | None of these |
| Answer» C. Neutral remote sensing | |