MCQOPTIONS
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MCQOPTIONS
This section includes 410 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured |
| A. | Normal to base line |
| B. | Parallel to base line |
| C. | Both (A) and (B) |
| D. | Neither (A) nor (B) |
| Answer» C. Both (A) and (B) | |
| 152. |
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 | |
| 153. |
The principal plane contains |
| A. | Nadir point |
| B. | Iso-centre |
| C. | Principal point |
| D. | All the above |
| Answer» E. | |
| 154. |
The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is |
| A. | B = bH/f |
| B. | B =f/bH |
| C. | B = b/fH |
| D. | B = H/bf |
| Answer» B. B =f/bH | |
| 155. |
The prime vertical passes through |
| A. | The east point of the horizon |
| B. | The west point of the horizon |
| C. | The zenith point of the observer |
| D. | All the above |
| Answer» E. | |
| 156. |
The average eye base is assumed as |
| A. | 58 mm |
| B. | 60 mm |
| C. | 62 mm |
| D. | 64 mm |
| Answer» E. | |
| 157. |
Closed contours, with higher value inwards, represent a |
| A. | depression |
| B. | hillock |
| C. | plain surface |
| D. | none of the above |
| Answer» C. plain surface | |
| 158. |
The solar tidal force divided by lunar tidal force is |
| A. | 1/3 |
| B. | 1/2 |
| C. | 3/4 |
| D. | 5/4 |
| Answer» C. 3/4 | |
| 159. |
In the double application of principle of reversion, the apparent error is |
| A. | equal to true error |
| B. | half the true error |
| C. | two times the true error |
| D. | four times the true error |
| Answer» E. | |
| 160. |
If the length of a chain is found to be short on testing, it can be adjusted by |
| A. | straightening the links |
| B. | removing one or more small circular rings |
| C. | closing the joints of the rings if opened out |
| D. | all of the above |
| Answer» B. removing one or more small circular rings | |
| 161. |
Rotation of the camera at exposure about its vertical axis, is known as |
| A. | Swing |
| B. | Tilt |
| C. | Tip |
| D. | None of these |
| Answer» B. Tilt | |
| 162. |
The altitude of a circumpolar star is maximum when it is |
| A. | At east elongation |
| B. | At upper culmination |
| C. | At west elongation |
| D. | At lower culmination |
| Answer» C. At west elongation | |
| 163. |
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 φ . cos δ | |
| 164. |
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by |
| A. | sin H = tan φ . cot δ |
| B. | cos H = tan φ . cot δ |
| C. | tan H = tan φ . cot δ |
| D. | None of these |
| Answer» C. tan H = tan φ . cot δ | |
| 165. |
Longitudes are measured from 0° to |
| A. | 180° eastward |
| B. | 180° westward |
| C. | 180° east or westward |
| D. | 360° eastward |
| Answer» D. 360° eastward | |
| 166. |
Which of the following errors cannot be eliminated by taking both face observations ? |
| A. | error due to horizontal axis not being perpendicular to the vertical axis |
| B. | index error i.e. error due to imperfect adjustment of the vertical circle vernier |
| C. | error due to non-parallelism of the axis of telescope level and line of collimation |
| D. | none of the above |
| Answer» E. | |
| 167. |
Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ? |
| A. | radiation |
| B. | intersection |
| C. | traversing |
| D. | resection |
| Answer» C. traversing | |
| 168. |
The suitable contour interval for a map with scale 1 : 10000 is |
| A. | 2 m |
| B. | 5 m |
| C. | 10 m |
| D. | 20 m |
| Answer» B. 5 m | |
| 169. |
A metallic tape is made of |
| A. | steel |
| B. | invar |
| C. | linen |
| D. | cloth and wires |
| Answer» E. | |
| 170. |
The angle between the observer's meridian and declination circle of a heavenly body, is known as |
| A. | Hour angle |
| B. | Azimuth |
| C. | Right ascension |
| D. | Declination |
| Answer» B. Azimuth | |
| 171. |
The rise and fall method of levelling provides a complete check on |
| A. | backsight |
| B. | intermediate sight |
| C. | foresight |
| D. | all of the above |
| Answer» E. | |
| 172. |
Circumpolar stars |
| A. | Rotate round the North Pole |
| B. | Rotate round the celestial pole |
| C. | Remain always above the horizon |
| D. | Are seldom seen near the pole star |
| Answer» D. Are seldom seen near the pole star | |
| 173. |
Perspective centre relates to |
| A. | Parallel projection |
| B. | Orthogonal projection |
| C. | Central projection |
| D. | None of these |
| Answer» D. None of these | |
| 174. |
The scale of a vertical photograph of focal length ‘f’ taken from height of ‘H’ metres above M.S.L., at a point of reduced level ‘h’, is |
| A. | f/H |
| B. | f/(H + h) |
| C. | f/(H - h) |
| D. | (H - h)/f |
| Answer» D. (H - h)/f | |
| 175. |
Which of the following errors can be eliminated by taking mean of bot face observations ? |
| A. | error due to imperfect graduations |
| B. | error due to eccentricity of verniers |
| C. | error due to imperfect adjustment of plate levels |
| D. | error due to line of collimation not being perpendicular to horizontal axis |
| Answer» E. | |
| 176. |
Height of instrument method of levelling is |
| A. | more accurate than rise and fall method |
| B. | less accurate than rise and fall method |
| C. | quicker and less tedious for large number of intermediate sights |
| D. | none of the above |
| Answer» D. none of the above | |
| 177. |
In the cross-section method of indirect contouring, the spacing of cross-sections depends uponi) contour intervalii) scale of planiii) characteristics of groundThe correct answer is |
| A. | only (i) |
| B. | (i) and (ii) |
| C. | (ii) and (iii) |
| D. | (i), (ii) and (iii) |
| Answer» E. | |
| 178. |
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 levelThe correct answer is |
| A. | only (i) |
| B. | both (i) and (iv) |
| C. | only (iii) |
| D. | both (ii) and (iii) |
| Answer» C. only (iii) | |
| 179. |
In direct method of contouring, the process of locating or identifying points lying on a contour is called |
| A. | ranging |
| B. | centring |
| C. | horizontal control |
| D. | vertical control |
| Answer» E. | |
| 180. |
Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel |
| A. | 24 % |
| B. | 36 % |
| C. | 40 % |
| D. | 60 % |
| Answer» C. 40 % | |
| 181. |
Which of the following is not used in measuring perpendicular offsets ? |
| A. | line ranger |
| B. | steel tape |
| C. | optical square |
| D. | cross staff |
| Answer» B. steel tape | |
| 182. |
The hour angle of the heavenly body for Greenwich meridian equals the hour angle of the body for any other meridian + longitude: |
| A. | Mean sun |
| B. | True sun |
| C. | Vernal equinox |
| D. | All the above |
| Answer» E. | |
| 183. |
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 λ | |
| 184. |
When a star is between the pole and the horizon, the relationship between latitude (λ), zenith distance (z) and declination δ, is |
| A. | θ = z + δ |
| B. | θ = δ - z |
| C. | θ = 180° - (z + δ) |
| D. | θ = (z + δ) - 180° |
| Answer» D. θ = (z + δ) - 180° | |
| 185. |
The slotted template method |
| A. | Is prepared, by graphical method |
| B. | Is suitable for large areas with less control |
| C. | Is rapid and accurate |
| D. | All the above |
| Answer» E. | |
| 186. |
The rise and fall method |
| A. | is less accurate than height of instrument method |
| B. | is not suitable for levelling with tilting levels |
| C. | provides a check on the reduction of intermediate point levels |
| D. | quicker and less tedious for large number of intermediate sights |
| Answer» D. quicker and less tedious for large number of intermediate sights | |
| 187. |
The method of surveying by triangulation was first introduced by the Dutchman Snell in |
| A. | 1600 |
| B. | 1615 |
| C. | 1630 |
| D. | 1650 |
| Answer» C. 1630 | |
| 188. |
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 α - tan β)/S | |
| 189. |
Right ascension of a heavenly body is its equatorial angular distance measured |
| A. | Westward from the first point of Libra |
| B. | Eastward from the first point of Aeries |
| C. | Westward from the first point of Aeries |
| D. | Eastward from the first point of Libra |
| Answer» C. Westward from the first point of Aeries | |
| 190. |
The nearest star is so far away from the earth that the directions to it from two diametrically opposite points on the earth differs less than |
| A. | 0.01 second |
| B. | 0.001 second |
| C. | 0.0001 second |
| D. | None of these |
| Answer» D. None of these | |
| 191. |
The Polaris remains below horizon at |
| A. | 10° N |
| B. | 50° N Latitude |
| C. | Equator |
| D. | 5° S latitude |
| Answer» E. | |
| 192. |
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 | |
| 193. |
Overturning of vehicles on a curve can be avoided by using |
| A. | compound curve |
| B. | vertical curve |
| C. | reverse curve |
| D. | transition curve |
| Answer» E. | |
| 194. |
If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is |
| A. | 77° N |
| B. | 23° S |
| C. | 13° E |
| D. | 13° W |
| Answer» D. 13° W | |
| 195. |
From the principal point the horizon point lies on the principal line at a distance of |
| A. | f tan θ |
| B. | f sin θ |
| C. | f cot θ |
| D. | f cos θ |
| Answer» B. f sin θ | |
| 196. |
A plate parallel is the line on the plane of the negative |
| A. | Parallel to the principal line |
| B. | Perpendicular to the principal line |
| C. | Along the bisector of the angle between the principal line and a perpendicular line through principal plane |
| D. | None of these |
| Answer» C. Along the bisector of the angle between the principal line and a perpendicular line through principal plane | |
| 197. |
A lemniscate curve between the tangents will be transitional throughout if the polar deflection angle of its apex, is |
| A. | Δ/2 |
| B. | Δ/3 |
| C. | Δ/4 |
| D. | Δ/6 |
| Answer» E. | |
| 198. |
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 | |
| 199. |
Size of a theodolite is specified by |
| A. | the length of telescope |
| B. | the diameter of vertical circle |
| C. | the diameter of lower plate |
| D. | the diameter of upper plate |
| Answer» D. the diameter of upper plate | |
| 200. |
A telescope is said to be inverted if its |
| A. | vertical circle is to its right and the bubble of the telescope is down |
| B. | vertical circle is to its right and the bubble of the telescope is up |
| C. | vertical circle is to its left and the bubble of the telescope is down |
| D. | vertical circle is to its left and the bubble of the telescope is up |
| Answer» B. vertical circle is to its right and the bubble of the telescope is up | |