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.
| 301. |
A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads |
| A. | azimuth of the forward line |
| B. | bearing of the. forward line |
| C. | back bearing of the forward line |
| D. | equal to 360°-azimuth of the forward line. |
| Answer» B. bearing of the. forward line | |
| 302. |
If d is the distance between equidistant odd ordinates, the Simpson's rule for the areas, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 303. |
If the sight distance (S) is equal to the length of the vertical-curve (2l) joining two grades g1% and - g2%, the height of the apex will be |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 304. |
The branch of surveying in which both horizontal and vertical positions of a point, are determined by making instrumental observations, is known |
| A. | tacheometry |
| B. | tachemetry |
| C. | telemetry |
| D. | all the above. |
| Answer» E. | |
| 305. |
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 | |
| 306. |
If α and β be the elevations of two objects A and B respectively, θ be the angle observed by a sextant. The correct horizontal angle is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 307. |
If Δ is the angle of deflection of a simple curve of radius R, the length of its long chord, is |
| A. | R cosΔ/2 |
| B. | 2R cosΔ/2 |
| C. | R sinΔ/2 |
| D. | 2R sinΔ/2 |
| Answer» E. | |
| 308. |
Grid lines are parallel to |
| A. | magnetic meridian of the central point of the grid |
| B. | line representing the central true meridian of the grid |
| C. | geographical equator |
| D. | none of these. |
| Answer» C. geographical equator | |
| 309. |
While measuring with a metallic tape of 30 m length pull should be applied |
| A. | 1 kg |
| B. | 2 kg |
| C. | 3 kg |
| D. | 4 kg |
| Answer» D. 4 kg | |
| 310. |
An angle of deflection right, may be directly obtained by setting the instrument to read |
| A. | zero on back station |
| B. | 180° on back station |
| C. | 90° |
| D. | 270° on back station. |
| Answer» B. 180° on back station | |
| 311. |
In setting up a plane table at any station |
| A. | levelling is done first |
| B. | centering is done first |
| C. | both levelling and centering are done simultaneously |
| D. | orientation is done first. |
| Answer» D. orientation is done first. | |
| 312. |
Surveys which are carried out to depict mountains, rivers, water bodies, wooded areas and other cultural details, are known as |
| A. | cadastral surveys |
| B. | city surveys |
| C. | topographical surveys |
| D. | guide map surveys |
| Answer» D. guide map surveys | |
| 313. |
Prolongation of chain line across an obstruction in chain surveying, is done by |
| A. | making angular measurements |
| B. | drawing perpendiculars with a chain |
| C. | solution of triangles |
| D. | all the above. |
| Answer» C. solution of triangles | |
| 314. |
Perpendicularity of an offset may be judged by eye, if the length of the offset is |
| A. | 5 m |
| B. | 10 m |
| C. | 15 m |
| D. | 20 m. |
| Answer» D. 20 m. | |
| 315. |
The constant vertical distance between two adjacent contours, is called |
| A. | horizontal interval |
| B. | horizontal equivalent |
| C. | vertical equivalent |
| D. | contour interval |
| Answer» E. | |
| 316. |
The approximate formula for radial or perpendicular offsets from the tangent, is |
| A. | x/2R |
| B. | x²/2R |
| C. | x/R |
| D. | x²/R |
| Answer» C. x/R | |
| 317. |
The bearing of lines OA and OB are 16° 10' and 332° 18', the value of the included angle BOA is |
| A. | 316° 10' |
| B. | 158° 28' |
| C. | 348° 08' |
| D. | 43° 52' |
| Answer» E. | |
| 318. |
Setting out a curve by two theodolite method, involves |
| A. | linear measurements only |
| B. | angular measurements only |
| C. | both linear and angular measurements |
| D. | none of these. |
| Answer» C. both linear and angular measurements | |
| 319. |
Number of subdivisions per metre length of a levelling staff is |
| A. | 100 |
| B. | 200 |
| C. | 500 |
| D. | 1000 |
| Answer» C. 500 | |
| 320. |
In optical reading instruments |
| A. | the vertical circle is usually continuous from 0° to 359° |
| B. | the readings increase when the telescope is elevated in the face left position |
| C. | the readings decrease when the telescope is elevated in the face right position |
| D. | all the above. |
| Answer» E. | |
| 321. |
The ratio of the radius and apex distance of a curve deflecting through Δ°, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 322. |
In levelling operation |
| A. | when the instrument is being shifted, the staff must not be moved |
| B. | when the staff is being carried forward, the instrument must remain stationary |
| C. | both (a) and (b) |
| D. | neither (a) nor (b). |
| Answer» D. neither (a) nor (b). | |
| 323. |
In chain surveying tie lines are primarily provided |
| A. | to check the accuracy of the survey |
| B. | to take offsets for detail survey |
| C. | to avoid long offsets from chain lines |
| D. | to increase the number of chain lines. |
| Answer» D. to increase the number of chain lines. | |
| 324. |
The main principle of surveying is to work |
| A. | from part to the whole |
| B. | from whole to the part |
| C. | from higher level to the lower level |
| D. | from lower level to higher level. |
| Answer» C. from higher level to the lower level | |
| 325. |
If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to |
| A. | 573 S/R |
| B. | 573 R/S |
| C. | 171.9 S/R |
| D. | 1718.9 S/R. |
| Answer» E. | |
| 326. |
The angle of intersection of a contour and a ridge line, is |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 90°. |
| Answer» E. | |
| 327. |
One of the Lehmann's rules of plane tabling, is |
| A. | location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances |
| B. | when looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray |
| C. | when the instrument station is outside the circumscribing circle its location is always on the opposite side of the ray to the most distant point as the inter-section of the other two rays |
| D. | none of these. |
| Answer» B. when looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray | |
| 328. |
Pick up the correct statement from the following : |
| A. | the apparent error on reversal is twice the actual error |
| B. | the correction may be made equal to half the observed discrepancy. |
| C. | the good results may be obtained from a defective instrument by reversing and taking the mean of two erroneous results |
| D. | all the above. |
| Answer» E. | |
| 329. |
To avoid large centering error with very short legs, observations are generally made |
| A. | to chain pins |
| B. | by using optical system for centering the theodolite |
| C. | to a target fixed on theodolite tripod on which theodolite may be fitted easily |
| D. | all the above. |
| Answer» D. all the above. | |
| 330. |
Transition curves are introduced at either end of a circular curve, to obtain |
| A. | gradually decrease of curvature from zero at the tangent point to the specified quantity at the junction of the transition curve with main curve |
| B. | gradual increase of super-elevation from zero at the tangent point to the specified amount at the junction of the transition curve with main curve |
| C. | gradual change of gradient from zero at the tangent point to the specified amount at the junction of the transition curve with main curve |
| D. | none of these. |
| Answer» C. gradual change of gradient from zero at the tangent point to the specified amount at the junction of the transition curve with main curve | |
| 331. |
Ranging in chain survey means |
| A. | looking at an isolated point not on the line |
| B. | establishing an intermediate point on the line |
| C. | determining the distance between end points |
| D. | determining the offset distance |
| Answer» C. determining the distance between end points | |
| 332. |
In horizontal angles, the error due to imperfect levelling of the plate bubble is |
| A. | large when sights are nearly level |
| B. | large for long sights |
| C. | less for steeply inclined sights |
| D. | large for steeply inclined sights. |
| Answer» E. | |
| 333. |
Correction per chain length of 100 links along a slope having a rise of 1 unit in n horizontal units, is |
| A. | 100/n² |
| B. | 100 n2 |
| C. | 100/n³ |
| D. | 100/n |
| Answer» B. 100 n2 | |
| 334. |
Pick up the correct statement from the following |
| A. | 1 second of arc corresponds to a displacement ratio of 1:206, 300 |
| B. | 1 degree of arc corresponds to a displacement ratio of 1:57 |
| C. | the angular errors tend to propagate themselves along a traverse as the square root of the number of stations |
| D. | all the above. |
| Answer» E. | |
| 335. |
In reciprocal levelling, the error which is not completely eliminated, is due to |
| A. | earth's curvature |
| B. | non-adjustment of line of collimation |
| C. | refraction |
| D. | non-adjustment of the bubble tube. |
| Answer» D. non-adjustment of the bubble tube. | |
| 336. |
The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to |
| A. | the distance between the zero of gradient and the foot of the staff |
| B. | twice the distance between the zero of graduation and the foot of the staff |
| C. | thrice the distance between the zero of graduation and the foot of the staff |
| D. | none of the above. |
| Answer» C. thrice the distance between the zero of graduation and the foot of the staff | |
| 337. |
The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree of the curve is |
| A. | 5.73° |
| B. | 5.37° |
| C. | 3.57° |
| D. | 3.75°. |
| Answer» B. 5.37° | |
| 338. |
Two contour lines, having the same elevation |
| A. | cannot cross each other |
| B. | can cross each other |
| C. | cannot unite together |
| D. | can unite together. |
| Answer» E. | |
| 339. |
During levelling if back sight is more than foresight |
| A. | The forward staff is at lower point |
| B. | The back staff is at lower point |
| C. | The difference in level, cannot be ascertained. |
| D. | none of these. |
| Answer» C. The difference in level, cannot be ascertained. | |
| 340. |
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. | |
| 341. |
The most reliable method of plotting a theodolite traverse, is |
| A. | by consecutive co-ordinates of each station |
| B. | by independent co-ordinates of each station |
| C. | by plotting included angles and scaling off each traverse leg |
| D. | by the tangent method of plotting. |
| Answer» C. by plotting included angles and scaling off each traverse leg | |
| 342. |
The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is |
| A. | 102° |
| B. | 78° |
| C. | 45° |
| D. | none of these. |
| Answer» B. 78° | |
| 343. |
Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of offset should be limited to |
| A. | 14.14 |
| B. | 28.28 m |
| C. | 200 m |
| D. | none of these. |
| Answer» C. 200 m | |
| 344. |
If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 345. |
If L is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 346. |
If θ is the vertical angle of an inclined sight, δ is the angle of tilt of the staff, the error |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 347. |
If arithmetic sum of latitudes of a closed traverse is ∑Lat and closing error in latitude is dx, the correction for a side whose latitude is l, as given by Transit Rule, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 348. |
If f1 and f2 are the distances from the optical centre of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 349. |
THE_FOCAL_LENGTH_OF_AN_OBJECTIVE_VARIES_WITH_EYEPIECE.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 350. |
The operation of forming or bringing the clear image of the object in the plane of cross hairs is known as ______$ |
| A. | Centering |
| B. | Adjusting |
| C. | Parallax correcting |
| D. | Focusing |
| Answer» E. | |