Civil Engineering - Surveying MCQs Part 4

1. The reduced bearing of a line is N 87° W. Its whole circle bearing is

A.
87°

B.
273°

C.
93°

D.
3°

 Answer Option B

2. 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

E.
plane surveys.

 Answer Option C

3. If d is the distance between equidistant odd ordinates, the Simpson's rule for the areas, is

A.
[h1 + hn + 2(h3 + h5 + ... + hn - 2) + 4(h2 + h4 + ... + hn - 1)]

B.
[h1 + hn + 2(h3 + h5 + ... + hn - 2) + 4(h2 + h4 + ... + hn - 1)]

C.
[h1 + hn x 2(h2 + h4 + ... + hn - 1) + 4(h3 + h5 + ... + hn - 2)]

D.
[h1 + hn + 2(h3 + h5 + ... + hn - 2) + 4(h2 + h4 + ... + hn - 1)]

E.
none of these.

 Answer Option B

4. To set out a parallel from a given inccessible point to a given line AB, the following observations and made Distance AB and angle PAM = a and angle PBA = b are measured where Mis a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :

A.

B.

C.

D.

 Answer Option A

5. 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.
middle of the chain 0.45 m off the line

E.
all the above.

 Answer Option E

6. The distance between the point of intersection of an up grade + g1% and downgrade g2% and the highest point of the vertical curve of length L, is

A.

B.

C.

D. .

 Answer Option D

7. The total change in level along the line is equal to total back sights

A. minus total fore sights

B. the total rises minus total falls

C. the reduced level of last point minus reduced level of the first point

D. all the above.

 Answer Option D

8. ABCD is a rectangular plot of land. If the bearing of the side AB is 75°, the bearing of DC is

A. 75°

B. 255°

C. 105°

D. 285°

 Answer Option A

9. 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 Option B

10. Total latitude of a point is positive if it lies

A. north of the reference parallel

B. south of the reference parallel

C. east of the reference parallel

D. west of the reference parallel.

 Answer Option A

11. 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 Option D

12. The apparent error on reversal is

A. equal to the actual error

B. twice the actual error

C. thrice the actual error

D. none of these.

 Answer Option B

13. Magnetic declination at any place

A. remains constant

B. does not remain constant

C. fluctuates

D. changes abruptly.

 Answer Option B

14. Systematic errors are those errors

A. which cannot be recognised

B. whose character is understood

C. whose effects are cumulative and can be eliminated

D. none of these.

 Answer Option C

15. If L is in kilometres, the curvature correction is

A. 58.2 L2 mm

B. 64.8 L2 mm

C. 74.8 L2 mm

D. 78.4 L2 mm.

 Answer Option D

16. With usual notations, the expression represents

A. centrifugal force

B. centrifugal ratio

C. super elevation

D. radial acceleration.

 Answer Option B

17. 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 Option A

18. The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is

A. reciprocal levelling

B. precise levelling

C. differential levelling

D. flying levelling

 Answer Option A

19. 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 Option B

20. The horizontal angle between true meridian and magnetic meridian, is known

A. bearing

B. magnetic declination

C. dip

D. convergence.

 Answer Option B

21. Accuracy of elevation of various points obtained from contour map is limited to

A. of the contour interval

B. th of the contour interval

C. rd of the contour interval

D. th of the contour interval.

 Answer Option A

22. Magnetic bearing of a survey line at any place

A. remains constant

B. changes systematically

C. varies differently in different months of the year

D. is always greater than true bearing.

 Answer Option C

23. 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 Option C

24. The bearings of two traverse legs AB and BC are N52° 45' E and N34° 30' E respectively. The deflection angle is

A. 18° 15' E

B. 18° 15' N

C. 18° 15' W

D. 18° 15' R

E. 18° 15' L

 Answer Option E

25. A lemniscate curve will not be transitional throughout, if its deflection angle, is

A. 45°

B. 60°

C. 90°

D. 120°

E. 180°

 Answer Option A

26. 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

D. 5

E. 3/2

 Answer Option E

27. If V is the speed of a locomotive in km per hour, g is the acceleration due to gravity, G is the distance between running faces of the rails and R is the radius of the circular curve, the required super elevation is

A.

B.

C.

D.

 Answer Option D

28. 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

E. none of these

 Answer Option B

29. Accurate measurement of deflection angles with a transit not properly adjusted may be made by

A. setting the vernier A at zero at back station and then plunging the telescope

B. setting the vernier A at zero at back station and turning the instrument to the forward station

C. taking two back sights one with the telescope normal and the other with telescope inverted

D. none of these.

 Answer Option C

30. If whole circle bearing of a line is 120°, its reduced bearing is

A. S 20° E

B. S 60° E

C. N 120° E

D. N 60° E.

 Answer Option B

31. Greater accuracy in linear measurements, is obtained by

A. tacheometry

B. direct chaining

C. direct taping

D. all the above.

 Answer Option C

32. From any point on the surface with a given inclination

A. only one contour gradient is possible

B. two contour gradients are possible

C. indefinite contour gradients are possible

D. all the above.

 Answer Option C

33. 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 Option D

34. Reduced bearing of a line is an angle between

A. north line and given line measured clockwise

B. north line and given line measured anticlockwise

C. east or west and the given line

D. given line and the part of the meridian whether N end or S end, lying adjacent to it.

 Answer Option D

35. 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 Option C

36. The ratio of the radius and apex distance of a curve deflecting through Δ°, is

A.

B.

C.

D.

 Answer Option A

37. The ratio of the linear displacement at the end of a line, subtended by an arc of one second to the length of the line, is

A. 1:206 300

B. 1:3440

C. 1:57

D. 1:100.

 Answer Option A

38. 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 Option A

39. The magnetic meridian at any point, is the direction indicated by a freely suspended

A. magnetic needle

B. and properly balanced magnetic needle

C. properly balanced and uninfluenced by local attractive force

D. magnetic needle over an iron pivot.

 Answer Option C

40. If the radius of a simple curve is 600 m, the maximum length of the chord for calculating offsets, is taken

A. 10 m

B. 15 m

C. 20 m

D. 25 m

E. 30 m.

 Answer Option E

41. α, β are the horizontal angles measured at the ends of a base line AB to a hill top whose angle of elevation from station A is θ°. The height of the hill top above the trunnion axis of the theodolite station, is

A.

B.

C.

D.

 Answer Option D

42. Correct distance obtained by an erroneous chain is:

A.

B.

C.

D. none of these.

 Answer Option A

43. For preparation of a contour plan for a route survey

A. method of squares is used

B. method of trace contour is used

C. method of cross profile is used

D. indirect method of contouring is used.

 Answer Option C

44. Flint glass

A. has slightly the greater refracting power than crown glass

B. has roughly double refracting power than that of crown

C. and crown glass proportions yield the required focal length and neutralise the dispersion produced by the convex lens at the emergence from the concave

D. all the above.

 Answer Option D

45. The zero of the graduated circle of a prismatic compass is located at

A. north end

B. east end

C. south end

D. west end.

 Answer Option C

46. A standard steel tape of length 30 m and cross-section 15 x 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 x 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 Option A

47. The bearing of AB is 190° and that of CB is 260° 30'. The included angle ABC, is

A. 80° 30'

B. 99° 30'

C. 70° 30'

D. none of these

 Answer Option C

48. The power of a lens

A. is reciprocal of its focal length

B. is positive if it is a convex lens

C. is negative if it is a concave lens

D. is measured in diopter.

 Answer Option D

49. 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 Option A

50. If h is the difference in height between end points of a chain of length l, the required slope correction is

A.

B.

C.

D. 3.

 Answer Option A