MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 331 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
_ The error due to eccentricity of inner and outer axes can be eliminated by$? |
| A. | reading both verniers and taking the mean of the two |
| B. | taking both face observations and taking the mean of the two |
| C. | double sighting |
| D. | taking mean of several readings distributed over different portions of the graduated circle |
| Answer» B. taking both face observations and taking the mean of the two | |
| 152. |
_ Refraction correction$? |
| A. | completely eliminates curvature correction |
| B. | partially eliminates curvature correction |
| C. | adds to the curvature correction |
| D. | has no effect on curvature correction |
| Answer» C. adds to the curvature correction | |
| 153. |
_ Latitude of the observer's position is equal to altitude of$? |
| A. | North pole |
| B. | Pole star |
| C. | Celestial pole |
| D. | All the above |
| Answer» D. All the above | |
| 154. |
_ The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as$? |
| A. | Satellite station |
| B. | Eccentric station |
| C. | False station |
| D. | Pivot station |
| Answer» E. | |
| 155. |
_ The following sights are taken on a “turning point”$? |
| A. | foresight only |
| B. | backsight only |
| C. | foresight and backsight |
| D. | foresight and intermediate sight |
| Answer» D. foresight and intermediate sight | |
| 156. |
_ Closed contours, with higher value inwards, represent a$? |
| A. | depression |
| B. | hillock |
| C. | plain surface |
| D. | none of the above |
| Answer» C. plain surface | |
| 157. |
_ ‘H’ is the flying height above mean ground level and ‘f’ is the principal distance of a vertical photograph. The mean scale of the photographs is$? |
| A. | H. f |
| B. | H/f |
| C. | f/H |
| D. | H + f |
| Answer» D. H + f | |
| 158. |
_ The station pointer is generally used in$? |
| A. | Triangulation surveying |
| B. | Astronomical surveying |
| C. | Hydrographical surveying |
| D. | Photogrammetric surveying |
| Answer» D. Photogrammetric surveying | |
| 159. |
_ If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be$? |
| A. | true R.L. |
| B. | more than true R.L. |
| C. | less than true R.L. |
| D. | none of the above |
| Answer» D. none of the above | |
| 160. |
_ If ‘δ’ is the declination of the Polaris and ‘λ’ is the latitude of the place, the azimuth of the Polaris, is$? |
| A. | cos δ/cos λ |
| B. | cos (90° - δ)/cos (90° - λ) |
| C. | sin (90° - δ)/sin (90° - λ) |
| D. | tan (90° + δ)/tan (90° + λ) |
| Answer» B. cos (90¬¨‚àû - ≈í¬•)/cos (90¬¨‚àû - ≈í¬™) | |
| 161. |
_ The two point problem and three point problem are methods of$? |
| A. | resection |
| B. | orientation |
| C. | traversing |
| D. | resection and orientation |
| Answer» E. | |
| 162. |
_ Perspective centre relates to$? |
| A. | Parallel projection |
| B. | Orthogonal projection |
| C. | Central projection |
| D. | None of these |
| Answer» D. None of these | |
| 163. |
_ If the reduced bearing of a line AB is N60°W and length is 100 m, then the latitude and departure respectively of the line AB will be$? |
| A. | +50 m, +86.6 m |
| B. | +86.6 m, -50 m |
| C. | +50 m, -86.6 m |
| D. | +70.7 m, -50 m |
| Answer» C. +50 m, -86.6 m | |
| 164. |
_ α and β are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being ‘S’ and ‘f’ respectively. Parallax displacement of the point due to relief, is$? |
| A. | h tan α/S |
| B. | h tan β/S |
| C. | h (tan α + tan β)/S |
| D. | h (tan α - tan β)/S |
| Answer» D. h (tan ≈í¬± - tan ≈í‚â§)/S | |
| 165. |
_ The length of a parallel of λ latitude between two meridians is equal to difference in longitudes multiplied by$? |
| A. | sin λ |
| B. | cos λ |
| C. | tan λ |
| D. | cot λ |
| Answer» C. tan ≈í¬™ | |
| 166. |
_ If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a level The correct answer is$? |
| A. | only (i) |
| B. | both (i) and (iv) |
| C. | only (iii) |
| D. | both (ii) and (iii) |
| Answer» C. only (iii) | |
| 167. |
_ At western elongation, the pole star moves$? |
| A. | Eastward |
| B. | Westward |
| C. | Northward |
| D. | Southward |
| Answer» E. | |
| 168. |
_ The angle between the plane of the equator and the plane of the ecliptic, is known as obliquity of the ecliptic and its value is$? |
| A. | 22° 30' |
| B. | 23° 27' |
| C. | 23° 30' |
| D. | 24° 0' |
| Answer» C. 23¬¨‚àû 30' | |
| 169. |
__If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will__ |
| A. | increase |
| B. | decrease |
| C. | not change |
| D. | either ‘A’ or ‘B’ |
| Answer» B. decrease | |
| 170. |
__The adjustment of horizontal cross hair is required particularly when the instrument is used for__ |
| A. | leveling |
| B. | prolonging a straight line |
| C. | measurement of horizontal angles |
| D. | all of the above |
| Answer» B. prolonging a straight line | |
| 171. |
__Horizontal distances obtained by thermometric observations__ |
| A. | require slope correction |
| B. | require tension correction |
| C. | require slope and tension corrections |
| D. | do not require slope and tension corrections |
| Answer» E. | |
| 172. |
__The angle between the prolongation of the preceding line and the forward line of a traverse is called__ |
| A. | deflection angle |
| B. | included angle |
| C. | direct angle |
| D. | none of the above |
| Answer» B. included angle | |
| 173. |
__The station where observations are not made, but the angles at the station are used in triangulation series, is known as__ |
| A. | Satellite station |
| B. | Subsidiary station |
| C. | Pivot station |
| D. | Main station |
| Answer» D. Main station | |
| 174. |
__For mapping any country__ |
| A. | Geodetic triangulation of greatest possible sides and accuracy is carried out |
| B. | Primary triangles are broken down into secondary triangles of somewhat lesser accuracy |
| C. | Secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys |
| D. | All the above |
| Answer» E. | |
| 175. |
__The process of determining the locations of the instrument station by drawing re sectors from the locations of the known stations is called__ |
| A. | radiation |
| B. | intersection |
| C. | resection |
| D. | traversing |
| Answer» D. traversing | |
| 176. |
__In a spherical triangle ABC, right angled at C, sin b equals__ |
| A. | sin a cos A |
| B. | cos a sin A |
| C. | tan a cot A |
| D. | cot A tan a |
| Answer» D. cot A tan a | |
| 177. |
__Normal tension is that pull which__ |
| A. | is used at the time of standardising the tape |
| B. | neutralizes the effect due to pull and sag |
| C. | makes the correction due to sag equal to zero |
| D. | makes the correction due to pull equal to zero |
| Answer» C. makes the correction due to sag equal to zero | |
| 178. |
__The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be__ |
| A. | equidistant from A and B |
| B. | closer to the higher station |
| C. | closer to the lower station |
| D. | as far as possible from the line AB |
| Answer» B. closer to the higher station | |
| 179. |
__Spring tides are caused when__ |
| A. | Sun and moon are in line with earth |
| B. | Solar tidal force acts opposite to lunar tidal force |
| C. | Solar tidal force and lunar tidal force both coincide |
| D. | None of these |
| Answer» D. None of these | |
| 180. |
_The line of collimation method of reduction of levels, does not provide a check on$? |
| A. | Intermediate sights |
| B. | Fore sights |
| C. | Back sights |
| D. | Reduced levels |
| Answer» B. Fore sights | |
| 181. |
_The angle between the axis of earth and the vertical at the station of observation is called$? |
| A. | Astronomical latitude |
| B. | Astronomical co-latitude |
| C. | Co-declination of star |
| D. | Declination of star |
| Answer» C. Co-declination of star | |
| 182. |
_The meridian of a place is$? |
| A. | A great circle passing through the place and the poles |
| B. | A great circle whose plane is perpendicular to the axis of rotation and it also passes through the place |
| C. | A semi-circle which passes through the place and is terminated at the poles |
| D. | An arc of the great circle which passes through the place and is perpendicular to the equator |
| Answer» D. An arc of the great circle which passes through the place and is perpendicular to the equator | |
| 183. |
_If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by$? |
| A. | sin z = sec φ . cos δ |
| B. | cos z = sec φ . cos δ |
| C. | tan z = sec φ . cos δ |
| D. | None of these |
| Answer» B. cos z = sec ≈ì√ú . cos ≈í¬• | |
| 184. |
_With standard meridian as 82° 30' E the standard time at longitude 90° E is 8 h 30 m. The local mean time at the place will be$? |
| A. | 7 h 00 m |
| B. | 7 h 30 m |
| C. | 8 h 00 m |
| D. | 9 h 00 m |
| Answer» E. | |
| 185. |
_Intersection method of detailed plotting is most suitable for$? |
| A. | forests |
| B. | urban areas |
| C. | hilly areas |
| D. | plains |
| Answer» D. plains | |
| 186. |
_In triangulation surveys$? |
| A. | The area is divided into triangular figures |
| B. | Control stations are located from which detailed surveys are carried out |
| C. | Sides are not measured excepting the base line |
| D. | All the above |
| Answer» E. | |
| 187. |
_Assuming human normal vision distance 25 cm, smallest measurable angle 20", and intraocular distance 6.5 cm, the smallest depth to be discerned is$? |
| A. | 0.1 mm |
| B. | 0.5 mm |
| C. | 1.00 mm |
| D. | 1.1 mm |
| Answer» B. 0.5 mm | |
| 188. |
_Which of the following methods of offsets involves less measurement on the ground?$? |
| A. | method of perpendicular offsets |
| B. | method of oblique offsets |
| C. | method of ties |
| D. | all involve equal measurement on the ground |
| Answer» B. method of oblique offsets | |
| 189. |
_For adjusting a quadrilateral whose both the diagonals are observed, the equations of conditions involved, are$? |
| A. | Two angle equations and two side equations |
| B. | One angle equation and three side equations |
| C. | Three angle equations and one side equation |
| D. | None of these |
| Answer» D. None of these | |
| 190. |
_A series of closely spaced contour lines represents a$? |
| A. | steep slope |
| B. | gentle slope |
| C. | uniform slope |
| D. | plane surface |
| Answer» B. gentle slope | |
| 191. |
_The difference of parallax for a given difference in elevation is independent of$? |
| A. | Focal length of the camera |
| B. | Overall size of the photo graphs |
| C. | Percentage of overlap |
| D. | All the above |
| Answer» E. | |
| 192. |
_The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as$? |
| A. | Isocenter |
| B. | Principal point |
| C. | Perspective centre |
| D. | Plumb line |
| Answer» C. Perspective centre | |
| 193. |
_According to Napier's Rules of circular parts for a right angled triangle, sine of middle part equals the product of$? |
| A. | Tangents of two adjacent parts |
| B. | Sines of two adjacent parts |
| C. | Cosines of two adjacent parts |
| D. | Both (A) and (B) above |
| Answer» E. | |
| 194. |
_If v, t and f/H are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement$? |
| A. | i = v. t. H/f |
| B. | i = v. f/t. H |
| C. | i = v. t. (f/H) |
| D. | i = t. H/v. f |
| Answer» D. i = t. H/v. f | |
| 195. |
_Triangulation surveys are carried out for locating$? |
| A. | Control points for surveys of large areas |
| B. | Control points for photogrammetric surveys |
| C. | Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc. |
| D. | All the above |
| Answer» E. | |
| 196. |
_The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between$? |
| A. | Horizon and equator |
| B. | Equator and zenith |
| C. | Zenith and pole |
| D. | Pole and horizon |
| Answer» D. Pole and horizon | |
| 197. |
_The allowable length of an offset depends upon the$? |
| A. | degree of accuracy required |
| B. | method of setting out the perpendiculars and nature of ground |
| C. | scale of plotting |
| D. | all of the above |
| Answer» E. | |
| 198. |
_The correction for parallax, is$? |
| A. | - 8".8 cos α |
| B. | + .8" sin α |
| C. | + 8".8 cos α |
| D. | - 8".8 cos α |
| Answer» D. - 8".8 cos ≈í¬± | |
| 199. |
_The length of a chain is measured from$? |
| A. | centre of one handle to centre of other handle |
| B. | outside of one handle to outside of other handle |
| C. | outside of one handle to inside of other handle |
| D. | inside of one handle to inside of other handle |
| Answer» C. outside of one handle to inside of other handle | |
| 200. |
_The correction applied to the measured base of length ‘L’ is$? |
| A. | Tension = (P - Ps)L/AE |
| B. | Sag = L³w²/24P² where w is the weight of tape/m |
| C. | Slope = (h²/2L) + (h⁴/8L³) where h is height difference of end supports |
| D. | All the above |
| Answer» E. | |