MCQOPTIONS
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MCQOPTIONS
This section includes 358 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 magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is |
| A. | 21° 45' |
| B. | 42° 15' |
| C. | 42° 15' W |
| D. | 21° 45' W |
| Answer» B. 42° 15' | |
| 152. |
The reduced level of a floor is 99.995 m, the staff reading on the floor is 1.505 m. If the inverted staff reading against the roof is 1.795 m, the floor level below the slab, is |
| A. | 3.290 m |
| B. | 3.300 m |
| C. | 3.275 m |
| D. | 2.790 m |
| Answer» C. 3.275 m | |
| 153. |
A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to |
| A. | cumulative, + 0.11 m |
| B. | compensating, ± 0.11 m |
| C. | cumulative, - 0.11 m |
| D. | none of these |
| Answer» B. compensating, ± 0.11 m | |
| 154. |
The zero of the graduated circle of a prismatic compass is located at |
| A. | north end |
| B. | east end |
| C. | south end |
| D. | west end. |
| Answer» D. west end. | |
| 155. |
The chaining on sloping ground is |
| A. | easier along the falling gradient |
| B. | easier along the up gradient |
| C. | equally convenient along falling as well as up gradient |
| D. | all the above. |
| Answer» B. easier along the up gradient | |
| 156. |
A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at A and B were 1.22 and 1.06. With the level set up a A, the readings at A and B were 1.55 and 1.37. The collimation error per 100 m length of sight is |
| A. | 0.02 m inclined upwards |
| B. | 0.04 m inclined downwards |
| C. | 0.04 m inclined upward |
| D. | none of these. |
| Answer» C. 0.04 m inclined upward | |
| 157. |
The whole circle bearing of a line is 290°. Its reduced bearing is |
| A. | N 20° E |
| B. | N 20° W |
| C. | N 70° W |
| D. | S 70° E |
| Answer» D. S 70° E | |
| 158. |
The distances AC and BC are measured from two fixed points A and B whose distance AB is known. The point C is plotted by intersection. This method is generally adopted in |
| A. | chain surveying |
| B. | traverse method of surveys |
| C. | triangulation |
| D. | none of these. |
| Answer» B. traverse method of surveys | |
| 159. |
In a closed traverse, sum of south latitudes exceeds the sum of north latitudes and the sum of east departures exceeds the sum of west departures, then, the closing line will lie in |
| A. | north-west quadrant |
| B. | north east quadrant |
| C. | south-east quadrant |
| D. | south-west quadrant. |
| Answer» B. north east quadrant | |
| 160. |
If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is sloping |
| A. | it is possible to set offsets correctly on east side |
| B. | it is possible to set offsets correctly on east side |
| C. | it is not possible to set offsets correctly on west side |
| D. | it is possible to set offsets correctly on both sides. |
| Answer» E. | |
| 161. |
Systematic errors are those errors |
| A. | which cannot be recognised |
| B. | whose character is understood |
| C. | whose effects are cumulative and can be eliminated |
| D. | none of these. |
| Answer» D. none of these. | |
| 162. |
If θ is the slope of the ground and l is the measured distance, the correction is |
| A. | 2l sin² θ/2 |
| B. | 2l cos² θ/2 |
| C. | 2l tan² θ/2 |
| D. | 2l cot² θ/2. |
| Answer» B. 2l cos² θ/2 | |
| 163. |
A level when set up 25 m from peg A and 50 m from peg B reads 2.847 on a staff held on A and 3.462 on a staff held on B, keeping bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 284.295 m respectively, the collimation error per 100 m is |
| A. | 0.015 m |
| B. | 0.030 m |
| C. | 0.045 m |
| D. | 0.060 m |
| Answer» E. | |
| 164. |
If the declination of the needle is 10° W |
| A. | each of the whole circle reckoning has to be micros by 10° |
| B. | in the quadrantal method, the correction is positive in the 1st and 3rd quadrants |
| C. | in the quadrantal method, the corrections is negative in 2nd and 4th quadrants |
| D. | all the above. |
| Answer» E. | |
| 165. |
For taking offsets with an optical square on the right hand side of the chain line, it is held |
| A. | by right hand upside down |
| B. | by left hand upright |
| C. | by right hand upright |
| D. | by left hand up side down. |
| Answer» C. by right hand upright | |
| 166. |
In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and the straight, and the angle between the polar ray and the straight, is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 3/2 |
| Answer» E. | |
| 167. |
Pick up the correct specification of Ramsden eyepiece from the following : |
| A. | it consists of two equal piano convex lenses |
| B. | the curved surfaces of plano-convex lenses face each other |
| C. | the two lenses are separated by a distance equal to 2/3 of the focal length of either lens. |
| D. | all the above. |
| Answer» E. | |
| 168. |
The tangent to the liquid surface in a level tube, is parallel to the axis of the level tube at |
| A. | every point of the bubble |
| B. | either end of the bubble |
| C. | the mid-point of the bubble |
| D. | no where. |
| Answer» D. no where. | |
| 169. |
Probable systematic error in precise levelling as recommended by International Geodetic Association should not exceed (where k is in kilometers.) |
| A. | ± 0.1 √k mm |
| B. | ± 0.2 √k mm |
| C. | ± 0.1 √k |
| D. | 0.2 √k mm |
| Answer» E. | |
| 170. |
For indirect ranging, number of ranging rods required, is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 171. |
Magnetic declination at any place |
| A. | remains constant |
| B. | does not remain constant |
| C. | fluctuates |
| D. | changes abruptly. |
| Answer» C. fluctuates | |
| 172. |
The surface of zero elevation around the earth, which is slightly irregular and curved, is known as |
| A. | mean sea level |
| B. | geoid surface |
| C. | level surface |
| D. | horizontal surface. |
| Answer» C. level surface | |
| 173. |
The representation of general topography of a very flat terrain is possible only |
| A. | by drawing contours at large interval |
| B. | by drawing contours at small interval |
| C. | by giving spot levels at large interval |
| D. | by giving spot levels to salient features at close interval. |
| Answer» E. | |
| 174. |
The bearing of line AB is 152° 30' and angle ABC measured clockwise is 124° 28'. The bearing of BC is |
| A. | 27° 52' |
| B. | 96° 58' |
| C. | 148° 08' |
| D. | 186° 58' |
| Answer» C. 148° 08' | |
| 175. |
Determining the difference in elevation between two points on the surface of the earth, is known as |
| A. | levelling |
| B. | simple levelling |
| C. | differential levelling |
| D. | longitudinal levelling. |
| Answer» D. longitudinal levelling. | |
| 176. |
While working on a plane table, the correct rule is : |
| A. | Draw continuous lines from all instrument stations |
| B. | Draw short rays sufficient to contain the points sought |
| C. | Intersection should be obtained by actually drawing second rays |
| D. | Take maximum number of sights as possible from each station to distant objects. |
| Answer» C. Intersection should be obtained by actually drawing second rays | |
| 177. |
In case of a direct vernier scale |
| A. | graduations increase in opposite direction in which graduations of the main scale increase |
| B. | smallest division is longer than smallest division of the main scale |
| C. | graduations increase in the same direction in which graduations of the main scale increase |
| D. | none of these. |
| Answer» D. none of these. | |
| 178. |
Permanent adjustments of a level are |
| A. | 2 in number |
| B. | 3 in number |
| C. | 4 in number |
| D. | 6 in number |
| Answer» B. 3 in number | |
| 179. |
The correction to be applied to each 30 metre chain length along θ° slope, is |
| A. | 30 (sec θ - 1) m |
| B. | 30 (sin θ - 1) m |
| C. | 30 (cos θ - 1) m |
| D. | 30 (tan θ - 1) m |
| Answer» B. 30 (sin θ - 1) m | |
| 180. |
If + 0.8% grade meets - 0.7% grade and the rate of change of grade for 30 m distance is 0.05, the length of the vertical curve will be |
| A. | 600 m |
| B. | 700 m |
| C. | 800 m |
| D. | 900 m |
| Answer» E. | |
| 181. |
If i is the stadia distance, f is the focal length and d is the distance between the objective and vertical axis of the techeometer, the multiplying constant, is |
| A. | f/i |
| B. | i/f |
| C. | (f + d) |
| D. | f/d. |
| Answer» B. i/f | |
| 182. |
It is more difficult to obtain good results while measuringhorizontal distance by stepping |
| A. | up-hill |
| B. | down-hill |
| C. | in low undulations |
| D. | in plane areas. |
| Answer» B. down-hill | |
| 183. |
Pick up the incorrect statement from the following : |
| A. | while measuring a distance with a tape of length 100.005 m, the distance to be increasing by 0.005 m for each tape length |
| B. | an increase in temperature causes a tape to increase in length and the measured distance is too large |
| C. | the straight distance between end points of a suspended tape is reduced by an amount called the sag correction |
| D. | a 100 m tape of cross section 10 mm x 0.25 mm stretches about 10 mm under 5 kg pull. |
| Answer» C. the straight distance between end points of a suspended tape is reduced by an amount called the sag correction | |
| 184. |
The additional lines which are measured to show the correctness of the chain surveying are called: |
| A. | check clines |
| B. | proof lines |
| C. | tie lines |
| D. | all of these. |
| Answer» E. | |
| 185. |
Planimeter is used for measuring |
| A. | volume |
| B. | area |
| C. | contour gradient |
| D. | slope angle |
| Answer» C. contour gradient | |
| 186. |
In a perfect prismatic compass |
| A. | magnetic axis and geometric axis of the needle coincide |
| B. | ends of the needle and pivot are in same vertical and horizontal planes |
| C. | pivot is vertically over the centre of the graduated circle |
| D. | all the above. |
| Answer» E. | |
| 187. |
The line normal to the plumb line is known as |
| A. | horizontal line |
| B. | level line |
| C. | datum line |
| D. | vertical line. |
| Answer» C. datum line | |
| 188. |
Resolving power of a telescope depends on |
| A. | the diameter of the aperture |
| B. | the pupil aperture of the eye |
| C. | the diameter of the object glass |
| D. | all the above. |
| Answer» E. | |
| 189. |
The 10 mm markings on a levelling staff placed at 20 m are separated by |
| A. | 1/1000 radian |
| B. | 1/1500 radian |
| C. | 1/2000 radian |
| D. | 1/2500 radian. |
| Answer» D. 1/2500 radian. | |
| 190. |
If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is |
| A. | 0.70 m |
| B. | 1.70 m |
| C. | 2.70 m |
| D. | 3.70 m |
| Answer» D. 3.70 m | |
| 191. |
The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known |
| A. | a simple curve |
| B. | a compound curve |
| C. | a reverse curve |
| D. | a vertical curve. |
| Answer» D. a vertical curve. | |
| 192. |
A lemniscate curve will not be transitional throughout, if its deflection angle, is |
| A. | 45° |
| B. | 60° |
| C. | 90° |
| D. | 120° |
| Answer» B. 60° | |
| 193. |
A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic |
| A. | spherical aberration |
| B. | chromatic aberration |
| C. | coma |
| D. | astigmatism. |
| Answer» B. chromatic aberration | |
| 194. |
Subtense tacheometry is generally preferred to if ground is |
| A. | flat |
| B. | undulating |
| C. | mountaineous |
| D. | deserts. |
| Answer» C. mountaineous | |
| 195. |
Accurate measurement of deflection angles with a transit not properly adjusted may be made by |
| A. | setting the vernier A at zero at back station and then plunging the telescope |
| B. | setting the vernier A at zero at back station and turning the instrument to the forward station |
| C. | taking two back sights one with the telescope normal and the other with telescope inverted |
| D. | none of these. |
| Answer» D. none of these. | |
| 196. |
The chord of a curve less than peg interval, is known as |
| A. | small chord |
| B. | sub-chord |
| C. | normal chord |
| D. | short chord. |
| Answer» C. normal chord | |
| 197. |
The apparent error on reversal is |
| A. | equal to the actual error |
| B. | twice the actual error |
| C. | thrice the actual error |
| D. | none of these. |
| Answer» C. thrice the actual error | |
| 198. |
Pantagraph is used for |
| A. | measuring distances |
| B. | measuring areas |
| C. | enlarging or reducing plans |
| D. | setting out right angles |
| Answer» D. setting out right angles | |
| 199. |
Probable accidental error in precise levelling as recommended by International Geodetic Association, should not exceed (where k is in kilometers.) |
| A. | ± 0.1 √k mm |
| B. | ± 0.5 √k mm |
| C. | ± 1 √k mm |
| D. | ± 2 √k mm |
| Answer» D. ± 2 √k mm | |
| 200. |
Two hill tops A and B 20 km apart are intervened by a third top C. If the top most contour of the three hill tops are of the same value, state whether the line of sight AB |
| A. | passes clear of hill top C |
| B. | passes below the hill top C |
| C. | grazes the hill top C |
| D. | none of these. |
| Answer» C. grazes the hill top C | |