MCQOPTIONS
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MCQOPTIONS
This section includes 19 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. |
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. | |
| 2. |
Remote sensing techniques make use of the properties of ___________ emitted, reflected or diffracted by the sensed objects: |
| A. | electric waves |
| B. | sound waves |
| C. | electromagnetic waves |
| D. | wind waves |
| Answer» D. wind waves | |
| 3. |
A reduction of nitrogen nutrient in plants: |
| A. | affects leaf colour |
| B. | reduces pigment concentration |
| C. | increase the visible reflectivity |
| D. | all of these |
| Answer» E. | |
| 4. |
Which one of the following statements is correct regarding the GPS satellites? |
| A. | the nominal altitude is about 20,200 km |
| B. | the inclination of axis satellite is 55° |
| C. | the satellite transmits two l band signals (l1 with 1575.42 mhz and l2 with 1276.6 mhz) |
| D. | all of these |
| Answer» E. | |
| 5. |
The object of photo-interpretation is: |
| A. | identification |
| B. | recognition of objects |
| C. | judging the significance of objects |
| D. | all of these |
| Answer» E. | |
| 6. |
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. | |
| 7. |
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) | |
| 8. |
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. | |
| 9. |
In case of reflection and refraction of electromagnetic radiation, |
| A. | angle of incidence = angle of refraction |
| B. | angle of incidence = angle of reflection |
| C. | angle of refraction = sum of the angles of incidence and refraction |
| D. | all the above |
| Answer» C. angle of refraction = sum of the angles of incidence and refraction | |
| 10. |
Which one the following is a correct statement? |
| A. | the vertical section of the soil extending into the parent material, is called profile |
| B. | the layers of the soil parallel to the earth surface are called horizons |
| C. | the transitional layer between two adjoining horizons is called boundary |
| D. | all of these |
| Answer» E. | |
| 11. |
sensor IFOV is proportional to: |
| A. | sin2 |
| B. | cos2 |
| C. | sec2 |
| D. | tan2 |
| Answer» D. tan2 | |
| 12. |
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. | |
| 13. |
Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena: |
| A. | cloud evolution |
| B. | vegetative cover |
| C. | snow cover |
| D. | all of these |
| Answer» E. | |
| 14. |
A perfectly black body: |
| A. | is a diffuse emitter |
| B. | absorbs all the radiations of every wave lengths |
| C. | emits power of every wave length |
| D. | all the above |
| Answer» E. | |
| 15. |
The reflectance from a surface is called specular reflection if it follows: |
| A. | |
| B. | lambert\s cosine law |
| C. | planktan\s law |
| D. | all of these |
| Answer» B. lambert\s cosine law | |
| 16. |
The coherence length over which there is a strong relationship between amplitudes is; |
| A. | directly proportional to the bandwidth |
| B. | inversely proportional to the bandwidth |
| C. | the square of the bandwidth |
| D. | none of these |
| Answer» C. the square of the bandwidth | |
| 17. |
Coherence of two electromagnetic waves takes place if their phase difference is: |
| A. | constant in time |
| B. | constant in space |
| C. | constant in time and space |
| D. | none of these |
| Answer» D. none of these | |
| 18. |
Formation of snow occurs if the cloud temperature is |
| A. | just above the freezing point |
| B. | at the freezing point |
| C. | below the freezing point |
| D. | none of these |
| Answer» D. none of these | |
| 19. |
In the given figure the phase of |
| A. | crest a |
| B. | b |
| C. | trough c is 3 |
| D. | all of these |
| Answer» E. | |