civil engineering MCQs – Page 173

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs

3441. A metallic tape is made of ______________ ?
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A. steel

B. linen

C. invar

D. cloth and wires

3442. The rise and fall method_______________?
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A. is not suitable for levelling with tilting levels

B. quicker and less tedious for large number of intermediate sights

C. is less.accurate than height of instrument method

D. provides a check on the reduction of intermediate point levels

3443. Intersection method of detailed plotting is most suitable for________________?
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A. hilly areas

B. plains

C. urban areas

D. forests

3444. For a tacheometer the additive and multi-plying constants are respectively________________?
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A. 0 and 100

B. 100 and 0

C. 0 and 0

D. 100 and 100

3445. Which of the following errors can be eliminated by taking mean of bot face observations ?
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A. error due to imperfect graduations

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

C. error due to imperfect adjustment of plate levels

D. error due to eccentricity of verniers

3446. The size of a plane table is________________?
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A. 300 mm x 450 mm

B. 600 mm x 750 mm

C. 450 mm x 600 mm

D. 750 mm x 900 mm

3447. In an internal focussing type of telescope, the lens provided is_______________?
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A. convex

B. concave

C. plano-convex

D. plano-concave

3448. 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. +50 m, +86.6 m

B. +86.6 m, -50 m

C. +70.7 m,-50 m

D. +50m, -86.6 m

3449. If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to_________________?
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A. altitude bubble on index frame if it is to be used as a level

B. altitude bubble on telescope if it is to be used as a level

C. altitude bubble on index frame

D. correct answer is?

E. altitude bubble on telescope

3450. Normal tension is that pull which_______________?
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A. neutralizes the effect due to pull and sag

B. makes the correction due to sag equal to zero

C. makes the correction due to pull equal to zero

D. is used at the time of standardising the tape

3451. The cross hairs in the surveying telescope are placed_____________?
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A. much closer to the objective lens than to the eye piece

B. much closer to the eye-piece than to the objective lens

C. midway between eye piece and objective lens

D. anywhere between eye-piece and objective lens

3452. If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated____________?
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A. on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate

B. on its outer spindle with a relative motion between the vernier and graduated scale of lower plate

C. on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate

D. on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

3453. Benchmark is established by________________?
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A. trigonometrical levelling

B. barometric levelling

C. hypsometry

D. spirit levelling

3454. Select the correct statement_______________?
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A. A contour is not necessarily a closed curve

B. Two contours of different elevations do not cross each other except in case of an overhanging cliff

C. A contour represents a ridge line if the concave side of lower value contour lies towards the higher value contour

D. All of the above statements are correct

3455. Select the correct statement?
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A. Slope of a hill cannot be determined with the help of contours

B. Contour interval on any map is kept constant

C. Inter-visibility of points on a contour map cannot be ascertained

D. Direct method of contouring is cheaper than indirect method

3456. Contour interval is_______________?
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A. larger if the time available is more

B. larger for accurate works

C. inversely proportional to the scale of the map

D. directly proportional to the flatness of ground

3457. For a well-conditioned triangle, no angle should be less than______________?
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A. 20

B. 60

C. 30

D. 45

3458. Horizontal distances obtained by thermometric observations_________________?
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A. require slope and tension corrections

B. require slope correction

C. require tension correction

D. do not require slope and tension corrections

3459. Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations ?
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A. measuring angle and distance from one transit station

B. measuring angles to the point from at least two stations

C. measuring distance from two points on traverse line

D. measuring angle at one station and distance from other

3460. The sensitivity of a bubble tube can be increased by________________?
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A. increasing the diameter of the tube

B. increasing the viscosity of liquid

C. decreasing the length of bubble

D. decreasing the radius of curvature of tube

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