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.
| 251. |
A standard steel tape of length 30 m and cross-section 15 × 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of steel tape is 2.2 × 106 kg/cm2, the correction to be applied is |
| A. | – 0.000909 m |
| B. | + 0.0909 m |
| C. | 0.000909 m |
| D. | None of these |
| Answer» B. + 0.0909 m | |
| 252. |
The sensitivity of a bubble tube can be increased by |
| A. | Increasing the diameter of the tube |
| B. | Decreasing the length of bubble |
| C. | Increasing the viscosity of liquid |
| D. | Decreasing the radius of curvature of tube |
| Answer» B. Decreasing the length of bubble | |
| 253. |
If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is |
| A. | d²/60) m |
| B. | (d²/30) m |
| C. | (d²/40) m |
| D. | d/30) m |
| Answer» B. (d²/30) m | |
| 254. |
The constant vertical distance between two adjacent contours, is called |
| A. | Horizontal interval |
| B. | Horizontal equivalent |
| C. | Vertical equivalent |
| D. | Contour interval |
| Answer» E. | |
| 255. |
An imaginary line lying throughout on the surface of the earth and preserving a constant inclination to the horizontal, is called |
| A. | Contour line |
| B. | Contour gradient |
| C. | Level line |
| D. | Line of gentle scope |
| Answer» C. Level line | |
| 256. |
Correct distance obtained by an erroneous chain is: |
| A. | (Erroneous chain length/Correct chain length) × Observed distance |
| B. | (Correct chain length/Erroneous chain length) × Observed distance |
| C. | Correct chain length/Observed distance) × Erroneous chain length |
| D. | None of these |
| Answer» B. (Correct chain length/Erroneous chain length) × Observed distance | |
| 257. |
For a tachometer the additive and multiplying constants are respectively |
| A. | 0 and 100 |
| B. | 100 and 0 |
| C. | 0 and 0 |
| D. | 100 and 100 |
| Answer» B. 100 and 0 | |
| 258. |
The real image of an object formed by the objective must lie |
| A. | In the plane of cross hairs |
| B. | At the centre of the telescope |
| C. | At the optical centre of the eye-piece |
| D. | Anywhere inside the telescope |
| Answer» B. At the centre of the telescope | |
| 259. |
Straight, parallel and widely spaced contours represent |
| A. | A steep surface |
| B. | A flat surface |
| C. | An inclined plane surface |
| D. | Curved surface |
| Answer» D. Curved surface | |
| 260. |
Angles to a given pivot station observed from a number of traverse stations when plotted, the lines to the pivot station intersect at a common point |
| A. | Angular measurements are correct and not the linear measurements |
| B. | Linear measurements are correct and not the angular measurements |
| C. | Angular and linear measurements are correct and not the plotting of traverse |
| D. | Angular and linear measurements and also plotting of the traverse are correct |
| Answer» E. | |
| 261. |
Bowditch rule is applied to |
| A. | An open traverse for graphical adjustment |
| B. | A closed traverse for adjustment of closing error |
| C. | Determine the effect of local attraction |
| D. | None of the above |
| Answer» C. Determine the effect of local attraction | |
| 262. |
Hydrographic surveys deal with the mapping of |
| A. | Large water bodies |
| B. | Heavenly bodies |
| C. | Mountainous region |
| D. | Canal system |
| Answer» B. Heavenly bodies | |
| 263. |
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. | |
| 264. |
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. | 4/3 |
| D. | 3/2 |
| Answer» E. | |
| 265. |
A dumpy level is set up with its eye-piece vertically over a peg . The height from the top of peg to the centre of the eye-piece is 1.540 m and the reading on peg is 0.705 m. The level is then setup over . The height of the eye-piece above peg is 1.490 m and a reading on is 2.195 m. The difference in level between and is |
| A. | 2.900 m |
| B. | 3.030 m |
| C. | 0.770 m |
| D. | 0.785 m |
| Answer» D. 0.785 m | |
| 266. |
Tilt of the staff in stadia tacheometry increases the intercept if it is |
| A. | Away from the telescope pointing down hill |
| B. | Towards the telescope pointing up-hill |
| C. | Away from the telescope pointing up-hill |
| D. | None of these |
| Answer» D. None of these | |
| 267. |
The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known |
| A. | Declination |
| B. | Azimuth |
| C. | Dip |
| D. | Bearing |
| Answer» D. Bearing | |
| 268. |
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 | |
| 269. |
The length of a traverse leg may be obtained by multiplying the latitude and |
| A. | Secant of its reduced bearing |
| B. | Sine of its reduced bearing |
| C. | Cosine of its reduced bearing |
| D. | Tangent of its reduced bearing |
| Answer» B. Sine of its reduced bearing | |
| 270. |
In levelling operation, |
| A. | The first sight on any change point is a back sight |
| B. | The second sight on any change point is a fore sight |
| C. | The line commences with a fore sight and closes with a back sight |
| D. | The line commences with a back sight and closes with a foresight |
| Answer» E. | |
| 271. |
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. | |
| 272. |
Chain surveying is well adopted for |
| A. | Small areas in open ground |
| B. | Small areas with crowded details |
| C. | Large areas with simple details |
| D. | Large areas with difficult details |
| Answer» B. Small areas with crowded details | |
| 273. |
Which of the following introduces an error of about 1 in 1000 if 20 m chain is used? |
| A. | Length of chain 20 mm wrong |
| B. | One end of the chain 0.9 m off the line |
| C. | One end of chain 0.9 m higher than the other |
| D. | All the above |
| Answer» E. | |
| 274. |
Over-turning of vehicles on a curve can be avoided by using |
| A. | Compound curve |
| B. | Vertical curve |
| C. | Reverse curve |
| D. | Transition curve |
| Answer» E. | |
| 275. |
Volume of the earth work may be calculated by |
| A. | Mean areas |
| B. | End areas |
| C. | Trapezoidal |
| D. | All the above |
| Answer» E. | |
| 276. |
Subtense bar is an instrument used for |
| A. | Levelling |
| B. | Measurement of horizontal distances in plane areas |
| C. | Measurement of horizontal distances in undulated areas |
| D. | Measurement of angles |
| Answer» D. Measurement of angles | |
| 277. |
The desired sensitivity of a bubble tube with 2 mm divisions is 30″. The radius of the bubble tube should be |
| A. | 13.75 m |
| B. | 3.44 m |
| C. | 1375 m |
| D. | None of these |
| Answer» B. 3.44 m | |
| 278. |
If is the stadia distance, is the focal length and 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 | |
| 279. |
The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to |
| A. | Shimmering |
| B. | Horizontal refraction |
| C. | Vertical refraction |
| D. | Both shimmering and horizontal refraction |
| Answer» E. | |
| 280. |
Ramsden eye-piece consists of |
| A. | Two convex lenses short distance apart |
| B. | Two concave lenses short distance apart |
| C. | One convex lens and one concave lens short distance apart |
| D. | Two Plano-convex lenses short distance apart, with the convex surfaces facing each other |
| Answer» E. | |
| 281. |
The two point problem and three point problem are methods of |
| A. | Resection |
| B. | Orientation |
| C. | Traversing |
| D. | Resection and orientation |
| Answer» E. | |
| 282. |
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) | |
| 283. |
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 | |
| 284. |
The method of reversal |
| A. | Is usually directed to examine whether a certain part is truly parallel or perpendicular to another |
| B. | Makes the erroneous relationship between parts evident |
| C. | Both (a) and (b) |
| D. | Neither (a) nor (b) |
| Answer» D. Neither (a) nor (b) | |
| 285. |
If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as |
| A. | Direct vernier |
| B. | Double vernier |
| C. | Retrograde vernier |
| D. | Simple vernier |
| Answer» D. Simple vernier | |
| 286. |
Detailed plotting is generally done by |
| A. | Radiation |
| B. | Traversing |
| C. | Resection |
| D. | All of the above |
| Answer» B. Traversing | |
| 287. |
For the construction of highway (or railway) |
| A. | Longitudinal sections are required |
| B. | Cross sections are required |
| C. | Both longitudinal and cross sections are required |
| D. | None of these |
| Answer» D. None of these | |
| 288. |
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. | |
| 289. |
The Random errors tend to accumulate proportionally to |
| A. | Numbers of operations involved |
| B. | Reciprocal of operations involved |
| C. | Square root of the number of operation involved |
| D. | Cube root of the number of operation involved |
| Answer» D. Cube root of the number of operation involved | |
| 290. |
There are two stations A and B. Which of the following statements is correct? |
| A. | The fore bearing of AB is AB |
| B. | The back bearing of AB is BA |
| C. | The fore and back bearings of AB differ by 180° |
| D. | All the above |
| Answer» E. | |
| 291. |
Check lines (or proof lines) in Chain Surveying, are essentially required |
| A. | To plot the chain lines |
| B. | To plot the offsets |
| C. | To indicate the accuracy of the survey work |
| D. | To increase the out-turn |
| Answer» D. To increase the out-turn | |
| 292. |
The smaller horizontal angle between the true meridian and a survey line, is known |
| A. | Declination |
| B. | Bearing |
| C. | Azimuth |
| D. | Dip |
| Answer» D. Dip | |
| 293. |
Contour interval is |
| A. | Inversely proportional to the scale of the map |
| B. | Directly proportional to the flatness of ground |
| C. | Larger for accurate works |
| D. | Larger if the time available is more |
| Answer» B. Directly proportional to the flatness of ground | |
| 294. |
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 | |
| 295. |
The size of a plane table is |
| A. | 750 mm × 900 mm |
| B. | 600 mm × 750 mm |
| C. | 450 mm × 600 mm |
| D. | 300 mm × 450 mm |
| Answer» C. 450 mm × 600 mm | |
| 296. |
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 | |
| 297. |
Which of the following methods of contouring is most suitable for a hilly terrain? |
| A. | Direct method |
| B. | Square method |
| C. | Cross-sections method |
| D. | Tachometric method |
| Answer» E. | |
| 298. |
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 | |
| 299. |
Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations? |
| A. | Measuring angle and distance from one transit station |
| B. | Measuring angles to the point from at least two stations |
| C. | Measuring angle at one station and distance from other |
| D. | Measuring distance from two points on traverse line |
| Answer» C. Measuring angle at one station and distance from other | |
| 300. |
Different grades are joined together by a |
| A. | Compound curve |
| B. | Transition curve |
| C. | Reverse curve |
| D. | Vertical curve |
| Answer» E. | |