MCQOPTIONS
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MCQOPTIONS
This section includes 301 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. |
In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to |
| A. | Line of sight |
| B. | Line of collimation |
| C. | Axis of the telescope |
| D. | None of these |
| Answer» B. Line of collimation | |
| 152. |
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 | |
| 153. |
If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, Prismoidal correction for a level section is |
| A. | D/2m(h1 – h2) |
| B. | D/3m(h1 – h2) |
| C. | D/6m(h1 – h2)2 |
| D. | D/6m(h1 – h2)3 |
| Answer» D. D/6m(h1 – h2)3 | |
| 154. |
The bearing of C from A is N 30° E and from B, 50 metres east of A, is N 60° W. The departure of C from A is |
| A. | 50 m |
| B. | 50 m |
| C. | 25 m |
| D. | 25 m |
| Answer» E. | |
| 155. |
The co-ordinate of a point measured perpendicular to the parallel, is called |
| A. | Total latitude |
| B. | Meridian distance |
| C. | Total departure |
| D. | Consecutive co-ordinate |
| Answer» B. Meridian distance | |
| 156. |
The resection by two point problem as compared to three point problem |
| A. | Gives more accurate problem |
| B. | Takes less time |
| C. | Requires more labour |
| D. | None of the above |
| Answer» D. None of the above | |
| 157. |
Probable systematic error in precise levelling as recommended by International Geodetic Association should not exceed (where is in kilometers.) |
| A. | ± 0.1 k mm |
| B. | ± 0.2 k mm |
| C. | ± 0.1 k |
| D. | 0.2 k mm |
| Answer» E. | |
| 158. |
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 | |
| 159. |
An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as |
| A. | Contour line |
| B. | Horizontal equivalent |
| C. | Contour interval |
| D. | Contour gradient |
| Answer» E. | |
| 160. |
The theodolites used for making tacheometric observations by optical wedge system, are |
| A. | Provided with stadia hairs in front of eye piece |
| B. | Not provided with stadia hairs at all |
| C. | Fitted with a glass wedge inside the telescope |
| D. | Fitted with a glass wedge in front of telescope |
| Answer» E. | |
| 161. |
The curvature of the earth’s surface, is taken into account only if the extent of survey is more than |
| A. | 100 sq km |
| B. | 160 sq km |
| C. | 200 sq km |
| D. | 260 sq km |
| Answer» E. | |
| 162. |
Accuracy of elevation of various points obtained from contour map is limited to |
| A. | ½ of the contour interval |
| B. | ¼ th of the contour interval |
| C. | rd of the contour interval |
| D. | th of the contour interval |
| Answer» B. ¼ th of the contour interval | |
| 163. |
The instrument used for accurate centering in plane table survey is |
| A. | Spirit level |
| B. | Alidade |
| C. | Plumbing fork |
| D. | Trough compass |
| Answer» D. Trough compass | |
| 164. |
The systematic errors which persist and have regular effects in the performance of a survey operation are due to |
| A. | Carelessness |
| B. | Faulty instrument |
| C. | Inattention |
| D. | None of these |
| Answer» C. Inattention | |
| 165. |
The combined effect of curvature and refraction over a distance kilometres is |
| A. | 67.2 L2 mm |
| B. | 76.3 L2 mm |
| C. | 64.5 L2 mm |
| D. | None of these |
| Answer» B. 76.3 L2 mm | |
| 166. |
l, the required slope correction is |
| A. | 2l cos2 |
| B. | 2l sin2 |
| C. | l tan2 |
| D. | l cos2 |
| Answer» C. l tan2 | |
| 167. |
Magnetic declination at any place |
| A. | Remains constant |
| B. | Does not remain constant |
| C. | Fluctuates |
| D. | Changes abruptly |
| Answer» C. Fluctuates | |
| 168. |
Dumpy level is most suitable when |
| A. | The instrument is to be shifted frequently |
| B. | Fly levelling is being done over long distance |
| C. | Many readings are to be taken from a single setting of the instrument |
| D. | All of the above |
| Answer» D. All of the above | |
| 169. |
The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known |
| A. | Balancing the sights |
| B. | Balancing the departures |
| C. | Balancing the latitudes |
| D. | Balancing the traverse |
| Answer» E. | |
| 170. |
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 | |
| 171. |
To set out a parallel from a given inaccessible point to a given line AB, the following observations are made: Distance AB and angle PAM = a and angle PBA = b are measured where M is a point on the line BA produced. The perpendicular to the desired parallel line from A and B are: |
| A. | AB/(cot b – cot a) |
| B. | AB/(cos b – cos a) |
| C. | AB/(cot a – cot b) |
| D. | AB/(cot a – cos b) |
| Answer» B. AB/(cos b – cos a) | |
| 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. |
True meridian of different places |
| A. | Converge from the South Pole to the North Pole |
| B. | Converge from the North Pole to the South Pole |
| C. | Converge from the equator to the poles |
| D. | Run parallel to each other |
| Answer» D. Run parallel to each other | |
| 174. |
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. | |
| 175. |
Short offsets are measured with |
| A. | An ordinary chain |
| B. | An invar tape |
| C. | A metallic tape |
| D. | A steel tape |
| Answer» B. An invar tape | |
| 176. |
If a tacheometer is fitted with an anal-latic lens |
| A. | Additive constant is 100, multiplying constant is zero |
| B. | Multiplying constant is 100, additive constant is zero |
| C. | Both multiplying and additive constants are 100 |
| D. | Both multiplying and additive constants are 50 |
| Answer» C. Both multiplying and additive constants are 100 | |
| 177. |
Benchmark is established by |
| A. | Hypsometry |
| B. | Barometric levelling |
| C. | Spirit levelling |
| D. | Trigonometrical levelling |
| Answer» D. Trigonometrical levelling | |
| 178. |
If D is the degree of the curve of radius R, the exact length of its specified chord, is |
| A. | Radius of the curve × sine of half the degree |
| B. | Diameter of the curve × sine of half the degree |
| C. | Diameter of the curve × cosine of half the degree |
| D. | Diameter of the curve × tangent of half the degree |
| Answer» C. Diameter of the curve × cosine of half the degree | |
| 179. |
The formula for the horizontal distances for inclined sights, on staff held normalis (f/i) s f + d h |
| A. | Minus sign is used for angle of depression |
| B. | Plus sign is used for angle of depression |
| C. | Minus sign is used for angle of elevation |
| D. | None of these |
| Answer» B. Plus sign is used for angle of depression | |
| 180. |
Sensitiveness of a level tube is designated by |
| A. | Radius of level tube |
| B. | Length of level tube |
| C. | Length of bubble of level tube |
| D. | None of the above |
| Answer» B. Length of level tube | |
| 181. |
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. | |
| 182. |
If L is the specified length of a tape, L1 its actual length and S the measured distance, then, the true distance is given by the formula, |
| A. | /L) × S |
| B. | (L/ × S |
| C. | (L – /L × S |
| D. | /L)² × S |
| Answer» B. (L/ × S | |
| 183. |
A clinometer is used for |
| A. | Measuring angle of slope |
| B. | Correcting line of collimation |
| C. | Setting out right angles |
| D. | Defining natural features |
| Answer» B. Correcting line of collimation | |
| 184. |
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. | |
| 185. |
For a closed traverse the omitted measurements may be calculated |
| A. | Length of one side only |
| B. | Bearing of one side only |
| C. | Both length and bearing of one side |
| D. | All the above |
| Answer» E. | |
| 186. |
The ratio of the length of long chord and the tangent length of a circular curve of radius R |
| A. | sin |
| B. | cos |
| C. | 2 sin |
| D. | 2 cos |
| Answer» E. | |
| 187. |
The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the Vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto |
| A. | 5″ |
| B. | 10″ |
| C. | 15″ |
| D. | 20″ |
| Answer» E. | |
| 188. |
The type of surveying which requires least office work is |
| A. | Tachometry |
| B. | Trigonometrical levelling |
| C. | Plane table surveying |
| D. | Theodolite surveying |
| Answer» D. Theodolite surveying | |
| 189. |
is the measured distance, the correction is |
| A. | 2l sin2 |
| B. | 2l cos2 |
| C. | 2l tan2 |
| D. | 2l cot2 |
| Answer» B. 2l cos2 | |
| 190. |
While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be |
| A. | 0.02 cm |
| B. | 0.15 cm |
| C. | 0.2 cm |
| D. | 0.1 cm |
| Answer» C. 0.2 cm | |
| 191. |
To orient a plane table at a point roughly south of the mid-point of two inaccessible conical hill stations and in the plains, a point is selected in line with AB and table is oriented at by bringing ab in line with AB. A ray is then drawn towards and at the table is oriented by back ray method. The orientation so obtained, is |
| A. | Unique and correct |
| B. | Incorrect |
| C. | Manifold and correct |
| D. | Not reliable |
| Answer» D. Not reliable | |
| 192. |
Back bearing of a line is equal to |
| A. | Fore bearing ± 90° |
| B. | Fore bearing ± 180° |
| C. | Fore bearing ± 360° |
| D. | Fore bearing ± 270° |
| Answer» C. Fore bearing ± 360° | |
| 193. |
due to curvature of earth is proportional |
| A. | d |
| B. | 1/d |
| C. | d² |
| D. | 1/d² |
| Answer» D. 1/d² | |
| 194. |
In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by |
| A. | Adding 180°, if the given bearing is less than 180° |
| B. | Subtracting 180°, if the given bearing, is more than 180° |
| C. | Changing the cardinal points, i.e. substituting N for S and E for W and vice-versa |
| D. | None of these |
| Answer» D. None of these | |
| 195. |
To orient a plane table at a point with two inaccessible points, the method generally adopted, is |
| A. | Intersection |
| B. | Resection |
| C. | Radiation |
| D. | Two point problem |
| Answer» E. | |
| 196. |
The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescopes |
| A. | Resolving power |
| B. | Brightness |
| C. | Field of view |
| D. | Magnification |
| Answer» E. | |
| 197. |
If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures than the sum of the east departures, the bearing of the closing line is in the |
| A. | NE quadrant |
| B. | SE quadrant |
| C. | NW quadrant |
| D. | SW quadrant |
| Answer» C. NW quadrant | |
| 198. |
An imaginary line joining the points of equal elevation on the surface of the earth, represents |
| A. | Contour surface |
| B. | Contour gradient |
| C. | Contour line |
| D. | Level line |
| Answer» D. Level line | |
| 199. |
The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as |
| A. | Plane alidade |
| B. | Telescopic alidade |
| C. | Clinometer |
| D. | Tacheometer |
| Answer» C. Clinometer | |
| 200. |
If is the difference in height between end points of a chain of length , the required slope correction is |
| A. | h²/2l |
| B. | h/2l |
| C. | h²/l |
| D. | 2h²/2l |
| Answer» B. h/2l | |