civil engineering Mcqs
251. The type of surveying which requires least office work is________________?
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A. theodolite surveying

B. trigonometrical levelling

C. plane table surveying

D. tacheomefry

252. A negative declination shows that the magnetic meridian is to the________________?
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A. southern side of the true meridian

B. none of the above

C. eastern side of the true meridian

D. western side of the true meridian
253. The difference between a level line and a horizontal line is that_______________?
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A. level line is a curved line while hori-zontal line is a straight line

B. level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line

C. horizontal line is normal to plumb line while level line may not be normal to the plumb line

D. both are same

254. In the penetration macadam construction, the bitumen is__________________?
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A. none of the above

B. sprayed before the aggregates are spread and compacted

C. sprayed after the aggregates are spread and compacted

D. premixed with aggregates and then spread

255. In hill roads the side drains arc provided________________?
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A. only on the hill side of road

B. only on the opposite side of hill

C. on both sides of road

D. none of the above

256. The relation between modulus of rupturefcr and characteristic strength of concrete fck is given by_______________?
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A. re fcr and fck are in N/mm2?

B. fcr=1.2Vf7

C. fcr=0.7Vf7

D. fcr=0.57f7

E. fcr=0.35Vf7

257. An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as__________________?
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A. contour line

B. contour interval

C. contour gradient

D. horizontal equivalent

258. In highway construction, rolling starts from________________?
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A. one side and proceed to other side

B. any of the above

C. centre and proceed to sides

D. sides and proceed to centre
259. The allowable length of an offset depends upon the______________?
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A. all of the above

B. scale of plotting

C. degree of accuracy required

D. method of setting out the perpendiculars and nature of ground

260. If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will_________________?
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A. not change

B. increase

C. decrease

D. either a or b

261. The provision of traffic signals at intersections______________?
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A. reduces right angled collisions but may increase rear end collisions

B. reduces rear end collisions but may increase right angled collisions

C. increases right angled and rear end collisions

D. reduces right angled and rear end collisions

262. In soils having same values of plasticity index, if liquid limit is increased, then_____________?
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A. compressibility and permeability decrease and dry strength increases

B. compressibility and permeability increase and dry strength decreases

C. compressibility, permeability and dry strength decrease

D. compressibility, permeability and dry strength increase

263. If aggregate impact value is 20 to 30 percent, then it is classified as_______________?
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A. satisfactory for road surfacing

B. strong

C. exceptionally strong

D. unsuitable for road surfacing

264. Benchmark is established by________________?
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A. trigonometrical levelling

B. spirit levelling

C. barometric levelling

D. hypsometry

265. The maximum number of vehicles beyond which the rotary may not function efficiently is______________?
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A. 500 vehicles per day

B. 500 vehicles per hour

C. 5000 vehicles per hour

D. 5000 vehicles per day

266. Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is_____________?
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A. M 10

B. M15

C. M20

D. M25

267. In case of hand mixing of concrete, the extra cement to be added is__________________?
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A. 10%

B. 20%

C. 5%

D. 15%

268. The angle of intersection of the two plane mirrors of an optical square is______________?
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A. 60

B. 30

C. 90

D. 45
269. A telescope is said to be inverted if its______________?
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A. vertical circle is to its left and the bubble of the telescope is down

B. vertical circle is to its right and the bubble of the telescope is down

C. vertical circle is to its right and the bubble of the telescope is up

D. vertical circle is to its left and the bubble of the telescope is up

270. The two point problem and three point problem are methods of________________?
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A. traversing

B. resection and orientation

C. resection

D. orientation

271. The binder normally used in flexible pavement construction is________________?
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A. bitumen

B. cement

C. lime

D. none of the above

272. The aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is________________?
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A. 8 cubic meter

B. 12 cubic meter

C. 15 cubic meter

D. 10 cubic meter

273. Select the correct statement_________________?
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A. Psychological extra widening depends on the length of wheel base.

B. Psychological extra widening depends on the number of traffic lanes.

C. Psychological extra widening depends on the speed of vehicle

D. Mechanical extra widening depends on the speed of vehicle.

274. The strength of concrete after one year as compared to 28 days strength is about_______________?
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A. 20 to 25% more

B. 25 to 50% more

C. 15 to 20% more

D. 10 to 15% more

275. Dead Slow is a______________?
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A. regulatory sign

B. warning sign

C. none of the above

D. informatory sign

276. For walls, columns and vertical faces of all structural members, the form work is generally removed after_______________?
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A. 7 days

B. 3 days

C. 24 to 48 hours

D. 14 days

277. Which of the following tests measures the toughness of road aggregates ?
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A. impact test

B. shape test

C. abrasion test

D. crushing strength test

278. If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to_______________?
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A. 1/d2

B. 1/d

C. d

D. d2
279. The methods used for locating the plane table stations are_______________?
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A. correct answer is

B. ntersection

C. resection

D. radiation

E. traversing

280. According to IS : 456 -1978, the modulus of elasticity of concrete Ec (in N/mm2) can be taken as______________?
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A. Ec = where fck N/mm2 = 700 is the characteristic strength in

B. Ec = = 5700

C. Ec = = 570

D. Ec = = 5700fck

281. For a well-conditioned triangle, no angle should be less than______________?
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A. 45

B. 60

C. 30

D. 20

282. The maximum width of a vehicle as recommended by IRC is________________?
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A. 3.81 m

B. 4.72 m

C. 2.44 m

D. 1.85m

283. In highway construction on super elevated curves, the rolling shall proceed from_________________?
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A. lower edge towards the upper edge

B. upper edge towards the lower edge

C. sides towards the centre

D. centre towards the sides

284. Horizontal distances obtained by thermometric observations_________________?
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A. require tension correction

B. require slope and tension corrections

C. require slope correction

D. do not require slope and tension corrections
285. Bulking of sand is maximum if moisture content is about____________?
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A. 6%

B. 2%

C. 4%

D. 10%

286. If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be___________________?
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A. 0.45 d

B. dependent on grade of concrete also

C. 0.35 d

D. 0.40 d
287. In an internal focussing type of telescope, the lens provided is_______________?
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A. plano-concave

B. plano-convex

C. convex

D. concave
288. If the reduced bearing of a line AB is N60W and length is 100 m, then the latitude and departure respectively of the line AB will be________________?
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A. +70.7 m,-50 m

B. +50 m, +86.6 m

C. +86.6 m, -50 m

D. +50m, -86.6 m

289. The minimum design speed for hairpin bends in hill roads is taken as_______________?
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A. 50 kmph

B. 30 kmph

C. 40 kmph

D. 20 kmph
290. Select the correct statement?
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A. Inter-visibility of points on a contour map cannot be ascertained

B. Direct method of contouring is cheaper than indirect method

C. Contour interval on any map is kept constant

D. Slope of a hill cannot be determined with the help of contours

291. The sensitivity of a bubble tube can be increased by________________?
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A. decreasing the length of bubble

B. decreasing the radius of curvature of tube

C. increasing the viscosity of liquid

D. increasing the diameter of the tube
292. Detailed plotting is generally done by________________?
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A. resection

B. traversing

C. radiation

D. all of the above

293. In case of hill roads, the extra widening is generally provided______________?
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A. one-fourth on inner side and three-fourth on outer side of the curve

B. equally on inner and outer sides of the curve

C. fully on the inner side of the curve

D. fully on the outer side of the curve

294. Which of the following errors can be eliminated by taking mean of bot face observations ?
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A. error due to imperfect adjustment of plate levels

B. error due to line of collimation not being perpendicular to horizontal axis

C. error due to imperfect graduations

D. error due to eccentricity of verniers

295. Size of a theodolite is specified by________________?
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A. the diameter of lower plate

B. the length of telescope

C. the diameter of upper plate

D. the diameter of vertical circle

296. The suitable contour interval for a map with scale 1 : 10000 is______________?
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A. 5m

B. 20 m

C. 10 m

D. 2 m
297. Increase in the moisture content in concrete_________________?
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A. reduces the strength

B. increases the strength

C. does not change the strength

D. all of the above

298. The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life of pavement is______________?
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A. 10000

B. 100000

C. 1000000

D. 1000

299. As compared to ordinary portland cement, use of pozzuolanic cement_______________?
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A. increases strength

B. increases shrinkage

C. reduces workability

D. increases bleeding

300. In direct method of contouring, the process of locating or identifying points lying on a contour is called_______________?
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A. ranging

B. vertical control

C. centring

D. horizontal control