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.
| 201. |
The semi-infinite snow albedo is proportional to the square root of the grain radius : |
| A. | in the 0.2 to 0.4 μm wave length region |
| B. | in the 0.4 to 0.8 μm wave length region |
| C. | in the 0.8 to 1.2 μm wave length |
| D. | None of these |
| Answer» C. in the 0.8 to 1.2 Œºm wave length | |
| 202. |
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. | Number and arrangement of leaves |
| Answer» E. | |
| 203. |
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. | Forest fires |
| Answer» E. | |
| 204. |
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. | |
| 205. |
The code based GPS receivers are generally used for: |
| A. | Vehicle tracking |
| B. | Land navigation |
| C. | Trans movement |
| D. | All of these |
| Answer» E. | |
| 206. |
In the given figure the phase of |
| A. | crest A is π/2 |
| B. | B crossing is π |
| C. | trough C is 3 π/2 |
| D. | All of these |
| Answer» E. | |
| 207. |
Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings). |
| A. | h > λ/Δ cos θ |
| B. | h = λ/8 cos θ |
| C. | h > λ/8 cos θ |
| D. | h < λ/8 cos θ |
| Answer» D. h < Œª/8 cos Œ∏ | |
| 208. |
The most widely used antenna in GPS is |
| A. | Parabolid antenna |
| B. | Microstrip antenna |
| C. | Horn antenna |
| D. | Slotted antenna |
| Answer» C. Horn antenna | |
| 209. |
Pick up the correct definition from the following with response to GIS. |
| A. | Common boundry between two areas of a locality is known as adjacency. |
| B. | The area features which are wholly contained within another area feature, is known so containment. |
| C. | The geometric property which describes the linkage between line features is defined as connectivity. |
| D. | All of these. |
| Answer» E. | |
| 210. |
Electromagnetic waves are characterised by : |
| A. | frequency |
| B. | wave length |
| C. | intensity |
| D. | direction of travel and plane of polarisation. |
| Answer» E. | |
| 211. |
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. | |
| 212. |
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. | |
| 213. |
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 | |
| 214. |
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. | polarisation variation |
| Answer» E. | |
| 215. |
Which one of the following frequency regions is a part of sun's radiation? |
| A. | Ultraviolet frequency region |
| B. | Visible frequency region |
| C. | Infrared frequency region |
| D. | Radio frequency region |
| Answer» E. | |
| 216. |
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 | |
| 217. |
Electromagnetic radiation : |
| A. | produces a time varying magnetic field and vice versa |
| B. | once generated, remains self-propagat-ing. |
| C. | is capable to travel across space |
| D. | consists of magnetic and electric fields |
| Answer» E. | |
| 218. |
The basic requirement of any sensor system, is : |
| A. | radiometric resolution |
| B. | spatial resolution |
| C. | spectral resolution |
| D. | temporal resolution |
| Answer» E. | |
| 219. |
The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from: |
| A. | 10-10 to 106 m |
| B. | 10-8 to 106 m |
| C. | 10-10 to 1010 m |
| D. | 10-8 to 108 m |
| Answer» B. 10-8 to 106 m | |
| 220. |
Identification of crops is affected by: |
| A. | the spectral characteristics of the sensor |
| B. | the spatial characteristics of the sensor |
| C. | the radio metric characteristics of the sensor |
| D. | All of these |
| Answer» E. | |
| 221. |
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 | |
| 222. |
If 0 is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to : |
| A. | sin2θ |
| B. | cos2θ |
| C. | sec2θ |
| D. | tan2θ |
| Answer» D. tan2Œ∏ | |
| 223. |
"An Electromagnetic wave falls on to a boundary between two loss less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as : |
| A. | Fresnel reflection |
| B. | Fresnel refraction |
| C. | Snell's law |
| D. | None of these |
| Answer» B. Fresnel refraction | |
| 224. |
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 | |
| 225. |
Leaf reflactance depends primarily on : |
| A. | the pigments |
| B. | internal cell structure |
| C. | equivalent water content |
| D. | All of these |
| Answer» E. | |
| 226. |
Which one of the following residual biases involves the GPS accuracy ? |
| A. | Satellite dependent baises due to uncertainty in the orbital parameters of the satellite. |
| B. | Receiver-depandent biases due to clock stability with line |
| C. | Signal propagation baises due to the sphere and troposphere propogation. |
| D. | All the above |
| Answer» E. | |
| 227. |
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 | |
| 228. |
Which one of the following statements is correct ? |
| A. | Snow albedo falls at all wave length with the increase of grain size |
| B. | The effect of grain size on reflection is maximum in the near-IR region |
| C. | The effect of grain size on reflection is low in the visible region of the spectrum |
| D. | All of these |
| Answer» E. | |